Windows Builder plugin of Eclipse not working in Linux - eclipse

Question

I am trying to develop a new RCP application in Linux environment, earlier I have developed RCP applications on Windows Environment. I knew that windowsBuilder serves best for GUI development of RCP. But, here it doesn't look like to be working.
Here are the additional details:
1. Eclipse version: Kepler Release
2. My Windows Builder Plugin downloaded site : google Eclipse
3. My Linux environment details :
Linux MINT
Release 13 (maya) 32-bit
Kernel Linux 3.2.0-23-generic
GNOME 3.4.2
The screen shot of the design page for a sample view in my rcp application is hereunder:
The problem, in the above image is there are 2 components in the view i.e.., a label and a button but are not shown in the view to the right side.
As a workaround, I tried installing from different update sites but it did not work for me.
UPDATE:
Error Log from error view:
Message : Unhandled event loop exception
stack trace:
java.lang.IllegalArgumentException: Argument cannot be null
at org.eclipse.swt.SWT.error(SWT.java:4378)
at org.eclipse.swt.SWT.error(SWT.java:4312)
at org.eclipse.swt.SWT.error(SWT.java:4283)
at org.eclipse.swt.graphics.GC.drawImage(GC.java:836)
at org.eclipse.wb.draw2d.Graphics.drawImage(Graphics.java:205)
at org.eclipse.wb.core.gef.part.AbstractComponentEditPart$1.paintClientArea(AbstractComponentEditPart.java:92)
at org.eclipse.wb.draw2d.Figure.paintFigure(Figure.java:533)
at org.eclipse.wb.draw2d.Figure.paint(Figure.java:514)
at org.eclipse.wb.draw2d.Figure.paintChildren(Figure.java:552)
at org.eclipse.wb.draw2d.Figure.paint(Figure.java:516)
at org.eclipse.wb.draw2d.Figure.paintChildren(Figure.java:552)
at org.eclipse.wb.draw2d.Figure.paint(Figure.java:516)
at org.eclipse.wb.draw2d.Figure.paintChildren(Figure.java:552)
at org.eclipse.wb.draw2d.Figure.paint(Figure.java:516)
at org.eclipse.wb.internal.draw2d.FigureCanvas.handlePaint(FigureCanvas.java:188)
at org.eclipse.wb.internal.draw2d.FigureCanvas.access$2(FigureCanvas.java:160)
at org.eclipse.wb.internal.draw2d.FigureCanvas$3.handleEvent(FigureCanvas.java:150)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1392)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1416)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1401)
at org.eclipse.swt.widgets.Control.gtk_expose_event(Control.java:3165)
at org.eclipse.swt.widgets.Composite.gtk_expose_event(Composite.java:726)
at org.eclipse.swt.widgets.Canvas.gtk_expose_event(Canvas.java:176)
at org.eclipse.swt.widgets.Widget.windowProc(Widget.java:2090)
at org.eclipse.swt.widgets.Control.windowProc(Control.java:5467)
at org.eclipse.swt.widgets.Display.windowProc(Display.java:4569)
at org.eclipse.swt.internal.gtk.OS._gtk_main_do_event(Native Method)
at org.eclipse.swt.internal.gtk.OS.gtk_main_do_event(OS.java:8707)
at org.eclipse.swt.widgets.Display.eventProc(Display.java:1243)
at org.eclipse.swt.internal.gtk.OS._g_main_context_iteration(Native Method)
at org.eclipse.swt.internal.gtk.OS.g_main_context_iteration(OS.java:2287)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3361)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1113)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:997)
at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:138)
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:610)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:567)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:124)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:354)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:181)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:636)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:591)
at org.eclipse.equinox.launcher.Main.run(Main.java:1450)

Answer 1

The plugins might be conflicting.And why not directly use an Eclipse for RCP and RAP Developers version.The WindowBuilder plugin is included and you don't need to download it.
Eclipse for RCP and RAP Developers :
A complete set of tools for developers who want to create Eclipse plug-ins and Rich Clients (RCP), or develop with the Remote Application Platform (RAP), plus Mylyn, XML editors, Code Recommenders, Git, CVS, and Maven integration.