After an IE crash, I get a message "IRONCAD Design Collaboration Suite has stopped working". Problem event name: BEX64. Rebooted and nothing changed. IRONCAD.EXE will not open. Any suggestions?

Try the Repair option from the Windows, Control Panel, Programs and Features (or on XP it's Add/Remove Programs).

I had the same problem last week.
I ended up doing a system restore.
But today it happened again.

I would really like to know why it does that?

It sounds like this "IE crash" is causing serious damage to Windows System files. In the first case above, a virus was involved. Once the virus was removed, the problem went away.

Oh, sorry,, my IE didn´t crash. The first time I tryied to print an pdf file. Adobe crashed, several times.

Then I rebooted and ironcad wouldn´t start.

The second time, everything started moving so slowly that I decided to reboot.

And ironcad wouldnt start.

http://technet.microsoft.com/en-us/library...483(WS.10).aspx

May be will be helpful.