FWIW, getting quite a lot of these:

HMODULE: 4194304
Unhandled exception EThread
Exception message:Thread Error: There are no more files (18)
Call stack:
[004208FC]
[00420935]
[0050BA10]
[0051E2A5]
[0044A30A]
[0044D100]
[0044D238]
[0044D100]
[0044CD7B]
[00421C16]

Running on W98.

Sure way to make this happen is to hit Apply in preferences, but does seem to happen "on it's own" as well.