Typo3 BE : No module "" could be found - typo3

Question

I've upgraded one of typo3 module from 4.1 to 6.2 when I switch the module back end options from dropdown. The error comes. Any Idea please help

Answer 1

After a couple days of research. I got the solution for this.
The issue is occured because in the Iframe url: parameter 'M' {Module Name} was not generated.[you could able to see the complete url by view frame in new window]
This was due to a mis configuration that doesn't support in TYPO3 6.2
I've changed conf.php and index.php in TYPO3 Module Folder.
1.In conf.php
OLD : $MCONF['script']='index.php';
CHANGE : $MCONF["script"]="_DISPATCH";
2.In index.php
OLD CODE
unset($MCONF);
require ("conf.php");
require ($BACK_PATH."init.php");
require_once($BACK_PATH.'template.php');
require_once (PATH_t3lib."class.t3lib_scbase.php");
$LANG->includeLLFile("EXT:extension_name/mod1/locallang.php");
$BE_USER->modAccess($MCONF,1);
NEW CODE
unset($MCONF);
require ("conf.php");
//Comment----------require ($BACK_PATH."init.php");
//Comment----------require_once($BACK_PATH.'template.php');
//Comment----------require_once (PATH_t3lib."class.t3lib_scbase.php");
/*
* Changed $LANG to $GLOBALS['LANG']
* Changed $BE_USER to $GLOBALS['BE_USER']
*/
$GLOBALS['LANG']->includeLLFile('EXT:wf_tagcloud_bl/mod1/locallang.xml');
$GLOBALS['BE_USER']->modAccess($MCONF,1);