Third Party Extensions in IE6

I made the mistake of cleaning up unused apps from my PC. In the process, IE6 stopped working (C++ abnormal termination error) UNLESS the Third Party Extensions tab is unchecked in Internet Options. I reinstalled IE6, but that did not fix the problem, and now I can't use valued extensions like Roboform. Is there an easy fix to this problem? Is there a way to determine what Third Party Extensions are actually still on my machine, and some way to remove offending ones and thereby possibly re-enable the ones I really still want by successfully turning this option back on?

 

Im currently trying to work out which are bad third party extensions as Im sure one of them is constantly crashing my browser. So far I have figured out that the list can be viewed and items removed by using the "View Objects" button via the Temporary internet files.Settings button.