I've just read all of the responses because I HAD the same problem after running a mic test. Solution: System Restore to point before the test was run and the problem goes away. I tried everything suggested barring the registry changes and the program would not shutdown no matter if I used 'The Ultimate Troubleshooter' or the Task Manager...nothing seemed to shut it down but System Restore worked for me! Good Luck!
I have tried that. Nothing.
I found the ACTUAL CURE HERE!!!!!
essentially, you add this to the run dialoque box:
Its a DirectPlay problem in DirectX
Thanks to everyone else who posted and narrowed my path!
I don't see how the link does anything to do with this problem but I tried the regsvr32 dpnet.dll, said it loaded fine. Didn't work.
I have DirectX 9.0c. I have a SoundBlaster Live! sound card. I have tried reinstalling the driver. Nothing.