How do I resolve a win32 exception problem?

I have an XP computer that has started giving me win32 exception errors. I have run system restore to recover to 3 days ago - but to no effect. The errors consistently occur when I try to run Disc Cleanup - lets me choose the drive and then Vis Studio debugger appears with the error. Other programs seem to run OK although explorer randomly causes the error when opening folders in Documents and settings. Weirdly - having caused an error If I then double click on the offending folder it opens it correctly.
How can I re  
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A similar Previously Answered Question that might help you:
unhandled win32 exception occurred in explorer.exe
BrianWgAuthor Commented:
Tried it - initially disabled all the non ms handlers - still had same problem - then started disabling the ms handlers - but clearly disabled one that i needed - now got a m/c that wont boot. Anyone know if i can fix this through recovery console or do i have to do a reinstall??
This is a very good page on how to perform an XP Repair Install, which will preserve your data and programs:

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Windows XP

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