I'm getting this after installing XUSBSUPP on my Windows 95 OSR2.5 VM:
Windows Protection Error. You need to restart your computer.
I tried installing the FIX95CPU patch to no avail.
I am having the same issue on Internet Explorer 5.5 (SP0; I couldn't get the SP2 installer to work) on Windows 98 SE.
UPDATE: I found a working link to IE 5.5 SP2 and installed it. Still having the issue. This is an English installation.