Install Aptana twig plugin - eclipse

I cant install twig on Aptana 3.5 (latest).
Someone got it working?
Cannot complete the install because of a conflicting dependency.
Software being installed: Twig Editor Feature 1.0.13.201309142024 (com.dubture.twig.feature.feature.group 1.0.13.201309142024)
Software currently installed: Aptana Studio 3 3.5.0.201401092130-09012014213131 (com.aptana.rcp.product 3.5.0.201401092130-09012014213131)
Only one of the following can be installed at once:
International Components for Unicode for Java (ICU4J) 50.1.1.v201304230130 (com.ibm.icu 50.1.1.v201304230130)
International Components for Unicode for Java (ICU4J) 4.4.2.v20110823 (com.ibm.icu 4.4.2.v20110823)
International Components for Unicode for Java (ICU4J) 4.0.1.v20090822 (com.ibm.icu 4.0.1.v20090822)
International Components for Unicode for Java (ICU4J) 4.0.1.v20090415 (com.ibm.icu 4.0.1.v20090415)
Cannot satisfy dependency:
From: Aptana Studio 3 RCP 3.5.0.201401092130-7q7dFA-FEB7f0RnEDkUtiuDg8D48 (com.aptana.feature.rcp.feature.group 3.5.0.201401092130-7q7dFA-FEB7f0RnEDkUtiuDg8D48)
To: org.eclipse.platform.feature.group [4.3.1.v20130911-1000]
Cannot satisfy dependency:
From: Aptana Studio 3 3.5.0.201401092130-09012014213131 (com.aptana.rcp.product 3.5.0.201401092130-09012014213131)
To: com.aptana.feature.rcp.feature.group [3.5.0.201401092130-7q7dFA-FEB7f0RnEDkUtiuDg8D48]
Cannot satisfy dependency:
From: Twig Editor Feature 1.0.13.201309142024 (com.dubture.twig.feature.feature.group 1.0.13.201309142024)
To: com.dubture.twig.ui [1.0.13.201309142024]
Cannot satisfy dependency:
From: Twig UI Plugin 1.0.13.201309142024 (com.dubture.twig.ui 1.0.13.201309142024)
To: bundle org.eclipse.php.ui 0.0.0
Cannot satisfy dependency:
From: Eclipse e4 Rich Client Platform 1.2.1.v20130910-2014 (org.eclipse.e4.rcp.feature.group 1.2.1.v20130910-2014)
To: com.ibm.icu [50.1.1.v201304230130]
Cannot satisfy dependency:
From: PDT UI Plug-in 2.1.1.v20090914-1400 (org.eclipse.php.ui 2.1.1.v20090914-1400)
To: bundle org.eclipse.wst.web 0.0.0
Cannot satisfy dependency:
From: PDT UI Plug-in 2.1.1.v20090921-1100 (org.eclipse.php.ui 2.1.1.v20090921-1100)
To: bundle org.eclipse.wst.web 0.0.0
Cannot satisfy dependency:
From: PDT UI Plug-in 3.2.0.201401101713 (org.eclipse.php.ui 3.2.0.201401101713)
To: bundle org.eclipse.wst.web 0.0.0
Cannot satisfy dependency:
From: Eclipse Platform 4.3.1.v20130911-1000 (org.eclipse.platform.feature.group 4.3.1.v20130911-1000)
To: org.eclipse.rcp.feature.group [4.3.1.v20130911-1000]
Cannot satisfy dependency:
From: Eclipse RCP 4.3.1.v20130911-1000 (org.eclipse.rcp.feature.group 4.3.1.v20130911-1000)
To: org.eclipse.e4.rcp.feature.group [1.2.1.v20130910-2014]
Cannot satisfy dependency:
From: Simple Web Plug-in 1.1.301.v200909021400 (org.eclipse.wst.web 1.1.301.v200909021400)
To: bundle com.ibm.icu [3.4.4,4.1.0)
Cannot satisfy dependency:
From: Simple Web Plug-in 1.1.301.v200911302230 (org.eclipse.wst.web 1.1.301.v200911302230)
To: bundle com.ibm.icu [3.4.4,4.1.0)

This is a complex one. There is some sort of incompatibility between the versions of software you are trying to install. I'm guessing that twig is not compatible with the latest version of Aptana. See if you can get a more recent version of twig (even try a development build).

Related

Eclipse Check for Updates says "The operation cannot be completed"

I tried to update Eclipse Version: 2021-09 (4.21.0) to the latest release and getting the following failure -
Cannot complete the install because of a conflicting dependency.
Software being installed: M2E - Maven Integration for Eclipse 2.0.4.20220904-1703 (org.eclipse.m2e.feature.feature.group 2.0.4.20220904-1703)
Software currently installed: m2e-wtp - JPA configurator for WTP (Optional) 1.4.4.20201128-1705 (org.eclipse.m2e.wtp.jpa.feature.feature.group 1.4.4.20201128-1705)
Only one of the following can be installed at once:
M2E Maven Integration for Eclipse Core 2.0.3.20220904-1703 (org.eclipse.m2e.core 2.0.3.20220904-1703)
Maven Integration for Eclipse 1.18.1.20210614-1604 (org.eclipse.m2e.core 1.18.1.20210614-1604)
Cannot satisfy dependency:
From: M2E - Maven Integration for Eclipse 2.0.4.20220904-1703 (org.eclipse.m2e.feature.feature.group 2.0.4.20220904-1703)
To: org.eclipse.equinox.p2.iu; org.eclipse.m2e.core [2.0.3.20220904-1703,2.0.3.20220904-1703]
Cannot satisfy dependency:
From: Maven JPA Configurator 1.4.4.20201128-1705 (org.eclipse.m2e.wtp.jpa 1.4.4.20201128-1705)
To: osgi.bundle; org.eclipse.m2e.core [1.6.0,2.0.0)
Cannot satisfy dependency:
From: m2e-wtp - JPA configurator for WTP (Optional) 1.4.4.20201128-1705 (org.eclipse.m2e.wtp.jpa.feature.feature.group 1.4.4.20201128-1705)
To: org.eclipse.equinox.p2.iu; org.eclipse.m2e.wtp.jpa [1.4.4.20201128-1705,1.4.4.20201128-1705]
Actually I didn't install "M2E - Maven Integration for Eclipse" manually, it is packaged with "Eclipse IDE for Enterprise Java and Web Developers". As suggested I uninstalled it. Now I am getting the following failure -
Cannot complete the install because of a conflicting dependency.
Software being installed: SWT Tools 3.108.600.v20220826-1037 (org.eclipse.swt.tools.feature.feature.group 3.108.600.v20220826-1037)
Software currently installed: SWT Tools Developer Resources 3.108.300.v20211104-1108 (org.eclipse.swt.tools.feature.source.feature.group 3.108.300.v20211104-1108)
Only one of the following can be installed at once:
SWT Tools 3.108.600.v20220826-1037 (org.eclipse.swt.tools.feature.feature.jar 3.108.600.v20220826-1037)
SWT Tools 3.108.300.v20211104-1108 (org.eclipse.swt.tools.feature.feature.jar 3.108.300.v20211104-1108)
Cannot satisfy dependency:
From: SWT Tools 3.108.300.v20211104-1108 (org.eclipse.swt.tools.feature.feature.group 3.108.300.v20211104-1108)
To: org.eclipse.equinox.p2.iu; org.eclipse.swt.tools.feature.feature.jar [3.108.300.v20211104-1108,3.108.300.v20211104-1108]
Cannot satisfy dependency:
From: SWT Tools 3.108.600.v20220826-1037 (org.eclipse.swt.tools.feature.feature.group 3.108.600.v20220826-1037)
To: org.eclipse.equinox.p2.iu; org.eclipse.swt.tools.feature.feature.jar [3.108.600.v20220826-1037,3.108.600.v20220826-1037]
Cannot satisfy dependency:
From: SWT Tools Developer Resources 3.108.300.v20211104-1108 (org.eclipse.swt.tools.feature.source.feature.group 3.108.300.v20211104-1108)
To: org.eclipse.equinox.p2.iu; org.eclipse.swt.tools.feature.feature.group [3.108.300.v20211104-1108,3.108.300.v20211104-1108]
For testing purpose I tried to update a freshly downloaded 2021-09 (4.21.0) and getting the following failure -
Cannot complete the install because of a conflicting dependency.
Software being installed: Git integration for Eclipse 6.3.0.202209071007-r (org.eclipse.egit.feature.group 6.3.0.202209071007-r)
Software currently installed: Git integration for Eclipse - Task focused interface 5.13.0.202109080827-r (org.eclipse.egit.mylyn.feature.group 5.13.0.202109080827-r)
Only one of the following can be installed at once:
Git integration for Eclipse - Core 5.13.0.202109080827-r (org.eclipse.egit.core 5.13.0.202109080827-r)
Git integration for Eclipse - Core 6.3.0.202209071007-r (org.eclipse.egit.core 6.3.0.202209071007-r)
Cannot satisfy dependency:
From: Git integration for Eclipse 6.3.0.202209071007-r (org.eclipse.egit.feature.group 6.3.0.202209071007-r)
To: org.eclipse.equinox.p2.iu; org.eclipse.egit.core [6.3.0.202209071007-r,6.3.0.202209071007-r]
Cannot satisfy dependency:
From: Git integration for Eclipse - Task focused interface 5.13.0.202109080827-r (org.eclipse.egit.mylyn.feature.group 5.13.0.202109080827-r)
To: org.eclipse.equinox.p2.iu; org.eclipse.egit.mylyn.ui [5.13.0.202109080827-r,5.13.0.202109080827-r]
Cannot satisfy dependency:
From: EGit Mylyn UI 5.13.0.202109080827-r (org.eclipse.egit.mylyn.ui 5.13.0.202109080827-r)
To: java.package; org.eclipse.egit.core [5.13.0,5.14.0)

Cannot install EclEmma in Eclipse Indigo

I tried to install EclEmma and Eclipse Indigo won't let me. I get the following error:
Cannot complete the install because of a conflicting dependency.
Software being installed: EclEmma Java Code Coverage 3.0.0.201706140232
(org.eclipse.eclemma.feature.feature.group 3.0.0.201706140232)
Software currently installed: Eclipse IDE for Java EE Developers
1.4.2.20120213-0813 (epp.package.jee 1.4.2.20120213-0813)
Only one of the following can be installed at once:
Eclipse Workbench User Guide 3.7.0.v20110601-0800
(org.eclipse.platform.doc.user 3.7.0.v20110601-0800)
Eclipse Workbench User Guide 3.7.1.r372_v20111202
(org.eclipse.platform.doc.user 3.7.1.r372_v20111202)
Eclipse Workbench User Guide 4.5.0.v20150603-2358
(org.eclipse.platform.doc.user 4.5.0.v20150603-2358)
Eclipse Workbench User Guide 4.5.1.v20150819-1130
(org.eclipse.platform.doc.user 4.5.1.v20150819-1130)
Cannot satisfy dependency:
From: Eclipse IDE for Java EE Developers 1.4.2.20120213-0813
(epp.package.jee 1.4.2.20120213-0813)
To: org.eclipse.epp.package.jee.feature.feature.group [1.4.2.20120213-0813]
Cannot satisfy dependency:
From: EclEmma Java Code Coverage 3.0.0.201706140232
(org.eclipse.eclemma.feature.feature.group 3.0.0.201706140232)
To: org.eclipse.platform.feature.group 3.8.0
Cannot satisfy dependency:
From: Java EE IDE Feature 1.4.2.20120213-0813
(org.eclipse.epp.package.jee.feature.feature.group 1.4.2.20120213-0813)
To: org.eclipse.platform.feature.group [3.7.2.v20120207-1839-9gF7UHPDFxGjd-
PqDr2jX_4yKaumkoHTz04_q-q]
Cannot satisfy dependency:
From: Eclipse Platform 3.7.2.v20120207-1839-9gF7UHPDFxGjd-
PqDr2jX_4yKaumkoHTz04_q-q (org.eclipse.platform.feature.group
3.7.2.v20120207-1839-9gF7UHPDFxGjd-PqDr2jX_4yKaumkoHTz04_q-q)
To: org.eclipse.platform.doc.user [3.7.1.r372_v20111202]
Cannot satisfy dependency:
From: Eclipse Platform 4.5.0.v20150603-2358
(org.eclipse.platform.feature.group 4.5.0.v20150603-2358)
To: org.eclipse.platform.doc.user [4.5.0.v20150603-2358]
Cannot satisfy dependency:
From: Eclipse Platform 4.5.1.v20150904-0015
(org.eclipse.platform.feature.group 4.5.1.v20150904-0015)
To: org.eclipse.platform.doc.user [4.5.1.v20150819-1130]
Cannot satisfy dependency:
From: Eclipse Platform 4.5.2.v20160212-1500
(org.eclipse.platform.feature.group 4.5.2.v20160212-1500)
To: org.eclipse.platform.doc.user [4.5.1.v20150819-1130]
What am I supposed to do or uninstall? I think it is another plug in or something that's causing a conflict

Groovy code is not highlighted

I downloaded the Eclipse directly from eclipse downloads page - the Eclipse IDE for Java EE Developers and unzipped it
however, when I open .groovy file, its not highlighted. I tried to download and run Groovy plugin from this page
During installing, the eclipse tells me, that groovy is already installed:
Cannot complete the install because of a conflicting dependency.
Software being installed: Groovy-Eclipse M2E integration 2.7.1.xx-20120921-2000-e37RELEASE (org.codehaus.groovy.m2eclipse.feature.group 2.7.1.xx-20120921-2000-e37RELEASE)
Software currently installed: Eclipse IDE for Java EE Developers 1.5.1.20121004-1506 (epp.package.jee 1.5.1.20121004-1506)
Only one of the following can be installed at once:
Object Teams Development Tooling Core 3.8.1.v_OTDT_r210_201206090452 (org.eclipse.jdt.core 3.8.1.v_OTDT_r210_201206090452)
Java Development Tools Core 3.8.1.v20120531-0637 (org.eclipse.jdt.core 3.8.1.v20120531-0637)
Object Teams Development Tooling Core 3.8.2.v_OTDT_r211_201209011847 (org.eclipse.jdt.core 3.8.2.v_OTDT_r211_201209011847)
Java Development Tools Core 3.8.2.v20120814-155456 (org.eclipse.jdt.core 3.8.2.v20120814-155456)
Java Development Tools Core 3.7.3.xx-20120921-2000-e37RELEASE (org.eclipse.jdt.core 3.7.3.xx-20120921-2000-e37RELEASE)
Cannot satisfy dependency:
From: Eclipse IDE for Java EE Developers 1.5.1.20121004-1506 (epp.package.jee 1.5.1.20121004-1506)
To: org.eclipse.epp.package.jee.feature.feature.group [1.5.1.20121004-1506]
Cannot satisfy dependency:
From: Groovy-Eclipse Feature 2.7.1.xx-20120921-2000-e37RELEASE (org.codehaus.groovy.eclipse.feature.feature.group 2.7.1.xx-20120921-2000-e37RELEASE)
To: org.codehaus.groovy.jdt.patch.feature.group [2.7.1.xx-20120921-2000-e37RELEASE]
Cannot satisfy dependency:
From: Groovy-Eclipse Feature 2.7.1.xx-20120921-2000-e37RELEASE (org.codehaus.groovy.eclipse.feature.feature.group 2.7.1.xx-20120921-2000-e37RELEASE)
To: org.eclipse.jdt.debug.ui 0.0.0
Cannot satisfy dependency:
From: Groovy-Eclipse M2E integration 2.7.1.xx-20120921-2000-e37RELEASE (org.codehaus.groovy.m2eclipse.feature.group 2.7.1.xx-20120921-2000-e37RELEASE)
To: org.codehaus.groovy.eclipse.feature.feature.group 0.0.0
Cannot satisfy dependency:
From: Java EE IDE Feature 1.5.1.20121004-1506 (org.eclipse.epp.package.jee.feature.feature.group 1.5.1.20121004-1506)
To: org.eclipse.jdt.feature.group 0.0.0
Cannot satisfy dependency:
From: JDI Debug UI 3.6.100.v20120530-1425 (org.eclipse.jdt.debug.ui 3.6.100.v20120530-1425)
To: bundle org.eclipse.jdt.core [3.8.0,4.0.0)
Cannot satisfy dependency:
From Patch: org.codehaus.groovy.jdt.patch.feature.group 2.7.1.xx-20120921-2000-e37RELEASE Eclipse Java Development Tools 3.8.0.v20120525-1249-8-8nFqlFNOfwKDRGz-pXLdGxEM83 (org.eclipse.jdt.feature.group 3.8.0.v20120525-1249-8-8nFqlFNOfwKDRGz-pXLdGxEM83)
To: org.eclipse.jdt.core [3.7.3.xx-20120921-2000-e37RELEASE]
Cannot satisfy dependency:
From Patch: org.codehaus.groovy.jdt.patch.feature.group 2.7.1.xx-20120921-2000-e37RELEASE Eclipse Java Development Tools 3.8.1.v20120814-104540-8-8nFqpFNOfwKDRVz-tXOcL5d_83 (org.eclipse.jdt.feature.group 3.8.1.v20120814-104540-8-8nFqpFNOfwKDRVz-tXOcL5d_83)
To: org.eclipse.jdt.core [3.7.3.xx-20120921-2000-e37RELEASE]
But the code is still not highlighted... Can you tell me what next steps should I try to get the code highlighted?
The most likely cause for this is that you are editing your groovy file in a Java editor.
Reopening the groovy file fixed it for me.

jboss tools installation error in eclipse

I've installed Java 7, Eclipse indigo and downloaded Jboss AS 7.1.1. Now i would like to install jboss tools using eclipse marketplace, but I'm receiving these dependency conflicts every time...
I'm getting the errors mentioned in the unsuccessful installations tab located here
Cannot complete the install because of a conflicting dependency.
Software being installed: JBoss Central 1.0.0.v20120307-1926-H67-Beta1 (org.jboss.tools.central.feature.feature.group 1.0.0.v20120307-1926-H67-Beta1)
Software currently installed: Eclipse IDE for Java EE Developers 1.4.0.20110615-0550 (epp.package.jee 1.4.0.20110615-0550)
Only one of the following can be installed at once:
Equinox Java Authentication and Authorization Service (JAAS) 1.0.200.v20100503 (org.eclipse.equinox.security 1.0.200.v20100503)
Equinox Java Authentication and Authorization Service (JAAS) 1.1.1.R37x_v20110822-1018 (org.eclipse.equinox.security 1.1.1.R37x_v20110822-1018)
Equinox Java Authentication and Authorization Service (JAAS) 1.1.0.v20110502 (org.eclipse.equinox.security 1.1.0.v20110502)
Cannot satisfy dependency:
From: Eclipse IDE for Java EE Developers 1.4.0.20110615-0550 (epp.package.jee 1.4.0.20110615-0550)
To: org.eclipse.epp.package.jee.feature.feature.group [1.4.0.20110615-0550]
Cannot satisfy dependency:
From: Java EE IDE Feature 1.4.0.20110615-0550 (org.eclipse.epp.package.jee.feature.feature.group 1.4.0.20110615-0550)
To: org.eclipse.platform.feature.group [3.7.0.v20110530-9gF7UHNFFt4cwE-pkZDJ7oz-mj4OSEIlu9SEv0f]
Cannot satisfy dependency:
From: Eclipse Platform 3.7.0.v20110530-9gF7UHNFFt4cwE-pkZDJ7oz-mj4OSEIlu9SEv0f (org.eclipse.platform.feature.group 3.7.0.v20110530-9gF7UHNFFt4cwE-pkZDJ7oz-mj4OSEIlu9SEv0f)
To: org.eclipse.equinox.security [1.1.0.v20110502]
Cannot satisfy dependency:
From: JBoss AS Core Plug-in 2.3.0.v20120321-1339-H91-Beta2 (org.jboss.ide.eclipse.as.core 2.3.0.v20120321-1339-H91-Beta2)
To: bundle org.eclipse.equinox.security 1.1.1
Cannot satisfy dependency:
From: JBoss Central 1.0.0.v20120307-1926-H67-Beta1 (org.jboss.tools.central 1.0.0.v20120307-1926-H67-Beta1)
To: bundle org.jboss.tools.project.examples 0.0.0
Cannot satisfy dependency:
From: JBoss Central 1.0.0.v20120307-1926-H67-Beta1 (org.jboss.tools.central.feature.feature.group 1.0.0.v20120307-1926-H67-Beta1)
To: org.jboss.tools.central [1.0.0.v20120307-1926-H67-Beta1]
Cannot satisfy dependency:
From: Project Examples 1.2.1.v20120320-2046-H78-Beta2 (org.jboss.tools.project.examples 1.2.1.v20120320-2046-H78-Beta2)
To: bundle org.jboss.tools.seam.core 0.0.0
Cannot satisfy dependency:
From: Seam Tools 3.3.0.v20120302-2019-H81-Beta1 (org.jboss.tools.seam.core 3.3.0.v20120302-2019-H81-Beta1)
To: bundle org.jboss.ide.eclipse.as.core 0.0.0
Please help me...
I too faced this issue. I could resolve the issue by first updating the Eclipse (Help --> Check for Updates) and then install the jboss tools.
Have you tried using the JDK 6? I had the same problem with JBoss 7, Indigo and JDK 7. Switching back to JDK 6 and wiping out all my other JDK instances worked for me. Make sure that you update indigo (as admin or root) as well.
Hope that helps a little.

Eclipse: How can I install UML2 Tools

I'd like to try UML2 Tools for Eclipse, as shown in this tutorial.
I currently have Eclipse 3.6 Helios for Java EE developers.
In my Eclipse Marketplace I switched marketplace catalog to Yoxos Marketplace and there searched for UML2 Tools SDK(Incubation). When I try to install them, Eclipse wont proceed and complains about some conflicting dependencies. Here's whole trace:
Cannot complete the install because of a conflicting dependency.
Software being installed: UML2 Tools SDK (Incubation) 0.9.0.v200906190654 (org.eclipse.uml2tools.sdk.feature.group 0.9.0.v200906190654)
Software currently installed: Eclipse IDE for Java EE Developers 1.3.2.20110301-1807 (epp.package.jee 1.3.2.20110301-1807)
Only one of the following can be installed at once:
EMF Ecore 2.5.0.v200906151043 (org.eclipse.emf.ecore 2.5.0.v200906151043)
EMF Ecore 2.6.1.v20100914-1218 (org.eclipse.emf.ecore 2.6.1.v20100914-1218)
EMF Ecore 2.6.0.v20100614-1136 (org.eclipse.emf.ecore 2.6.0.v20100614-1136)
Cannot satisfy dependency:
From: Eclipse IDE for Java EE Developers 1.3.2.20110301-1807 (epp.package.jee 1.3.2.20110301-1807)
To: org.eclipse.epp.package.jee.feature.feature.group [1.3.2.20110301-1807]
Cannot satisfy dependency:
From: Object Constraint Language (OCL) 2.0 Compatibility API 1.1.101.v200901271800 (org.eclipse.emf.ocl 1.1.101.v200901271800)
To: bundle org.eclipse.ocl.ecore [1.1.0,2.0.0)
Cannot satisfy dependency:
From: Java EE IDE Feature 1.3.2.20110301-1807 (org.eclipse.epp.package.jee.feature.feature.group 1.3.2.20110301-1807)
To: org.eclipse.jst.enterprise_ui.feature.feature.group 0.0.0
Cannot satisfy dependency:
From: Eclipse Java EE Developer Tools 3.2.3.v201011031800-7b7GHfIFSK2WBRT6E1mcyFXGPnSh (org.eclipse.jst.enterprise_ui.feature.feature.group 3.2.3.v201011031800-7b7GHfIFSK2WBRT6E1mcyFXGPnSh)
To: org.eclipse.jst.ws.jaxrs.ui [1.0.301.v201012020511]
Cannot satisfy dependency:
From: JAX-RS Tools - UI 1.0.301.v201012020511 (org.eclipse.jst.ws.jaxrs.ui 1.0.301.v201012020511)
To: bundle org.eclipse.emf.ecore [2.6.0,3.0.0)
Cannot satisfy dependency:
From: OCL 2.0 Binding for Ecore 1.3.0.v200905271400 (org.eclipse.ocl.ecore 1.3.0.v200905271400)
To: bundle org.eclipse.emf.ecore [2.5.0,2.6.0)
Cannot satisfy dependency:
From: UML2 Diagramming (Incubation) 0.9.0.v200906190654 (org.eclipse.uml2.diagram.feature.group 0.9.0.v200906190654)
To: org.eclipse.emf.ocl 0.0.0
Cannot satisfy dependency:
From: UML2 Tools SDK (Incubation) 0.9.0.v200906190654 (org.eclipse.uml2tools.sdk.feature.group 0.9.0.v200906190654)
To: org.eclipse.uml2.diagram.feature.group [0.9.0.v200906190654]
Maybe I don't understand whole concept and am trying something inappropriate, I don't know. Thank you for advices.
UML2 Tools has no release that works with Eclipse 3.6 and newer. You could use Papyrus instead.
If you really need UML2 Tools 0.9.0 to work in Eclipse Helios 3.6, there is a workaround you need to do before installing UML2 Tools as explained in this answer.