More about what I suspect: WireShark does something to prevent UrlSnooper to work.
Not sure if I alters WinPcap (as I believe I reinstalled it at one point) or some other file.
mouse, do you know if there are any other files/programs that UrlSnooper depends on - such as some DLLs or something - that WireShark may be altering?

I speculate that installing WireShark somehow breaks UrlSnooper. UrlSnooper worked for me until I installed WireShark. Now, even after uninstalling WireShark, UrlSnooper cannot autodetect the adapter. Maybe you should look into it by installing WireShark on your own system? The list of adapters shows up fine, but none of them return any results when sniffing packets.

Bump, seeing as how you replied to another topic. Any diagnostics programs I could run to help find the problem?