Immediate Crash

I have been trying to use TortoiseSVN through several revisions now, but
each time I install I run into the same issue. Everything installs okay. I
can right click on the c:\ folder and get a context menu and access
TortoiseSVN. If I navigate to any other folder on the drive and right
click, the explorer immediately crashes and I get "Windows Explorer has
encountered a problem and needs to close" dialog box. I have had this issue
on at least two different computers (fairly normal XP machines).
 
Does anyone else have this problem? I'm assuming there is a conflict with
some piece of software I have on my machine. Can I provide more information
to help address this issue?
 
Thanks,
Joe

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