For support on the various IE Tab plugins, you probably need to contact the authors.

Meanwhile, I recommend using the built-in Windows Update service from the Control Panel (might be in Security Center). Or use "real" IE for Windows updates. Either way, you can be assured of compatibility. And you don't have to tie up Firefox on those endless scans...

Automatic updates works, however, the problem I am having is that, if I try to check for updates manually, the plug-in stops responding when the search to ascertain that my software is up-to-date (active x control).