0) Dimension didn't write this utility, though I suppose you can still complain to him

1) It sounds like when you click that button your headset is sending a command over the control channel which causes the phone to think a call has ended so it shuts off the redirect. Or it is closing and re-opening the audio connection so the phone thinks it momentarily lost the headset connection and so it closes the channel. It shouldn't have anything to do with which program is launched, VC/VS/whatever. The dll that processes the control commands from the headset is called btagextmodule.dll, the one that Superdave hacked a while back. I've been thinking of writing a new .dll to replace that one so I can customize what happens when I hit buttons on the bt headset. If I do that, I can elminate problems like what you are experiencing as well as make the phone leave audio redirection on after a call ends. But first I need to actually buy a bluetooth headset.

2) That would be a 'feature', if there is no bluetooth headset device connected then turning on the redirect will fail.

Would you prefer it if the /q switch silenced the error message, or for the error message to automatically disappear after a few seconds? Anyone?