JBoss error mask upon returning to page from a popup

[Anuroop]

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Upon changing registry value as shown below, I was able to access all of the web elements most of the times. However, at times, I get the JBOSS error (browser,page) mask again which seems to be impenetrable.

Code:

[HKEY_CURRENT_USER\Software\Mercury Interactive\QuickTest Professional\MicTest\Packages\StdPackage\Settings]

"SkipWndMovedOut"=dword:00000001

Any suggestions on what needs to be done to access all the elements every time - by surpassing the JBOSS error mask page every time?

Thanks,
Anuroop.