When Reverse Engineering, the following error appears:
'Access Violation at address 59D8BC73 in module 'jscript.dll'. Read of address 00000000'
If Internet Explorer 9 BETA (IE9 beta) is installed, this issue can occur. We officially do not support any BETA version of any browser.
TDM uses the Microsoft Scripting engine - a standard part of Windows operating systems. Unfortunately, the IE9 beta installation affects the scripting engine and that's why the Access Violation in module JScript.dll error message appears.
OR
TDM version is unsupported.
WORKAROUND 1
Uninstall IE9 beta to resolve the issue
WORKAROUND 2
Download and install a Supported Toad Data Modeler. Get it from From Support Portal:
https://support.quest.com/download-product-select