Turns out that TRSDK.dll is used by certain sound recording devices that need to interact directly with your soundcard (e.g. Replay Music 2). 1. Search for the dll on your computer 2. Rename it (TRSDK.dll_rename) 3. Reboot 4. Run your sound recorder 5. Rename the file back to TRSDK.dll 6. Reboot This may not be the most efficient way to get rid of the problem but it's exactly what I just did and the problem has gone. Good luck - and please post whether or not this worked for you.