NTVDM problems; utorrent refuses to start

[FailedTsukkomi]

Well, utorrent was working perfectly fine today. Then, I left to go eat lunch and when I got back, I noticed utorrent wasn't running anymore. So I tried to run it again, except I got a black command prompt and this error:

utorrent.exe

The NTVDM CPU has encountered an illegal instruction.

CS:124a IP:0173 OP:63 72 6f 6c 6c Choose 'Close' to terminate the application.

I've googled the problem a bit and it seems like there's no real solution; clicking Ignore just comes up with another popup window with a slightly different CS:etc. code at the bottom. I could reinstall it, but I really, really don't want to since I had an 85 gigabyte torrent going that's been going for weeks, and it's at 90% now. >_> Thanks for any help in advance.

[Ultima]

...? ntvdm.exe is used only for 16-bit applications. There's no reason µTorrent should at all be interacting with it... Have you messed with the Compatibility tab in the µTorrent executable's file properties?

[jewelisheaven]

Run anti-rootkit/malware!!

If you're able to get it to at least show up, a Process Explorer DLL list of the utorrent.exe process may help :/