I get the error below many times and this error makes it impossible to run my application unless I restart the whole Mac.
This is not caused due to changes in code.
ERROR :
Couldn't register com.yourcompany. with the bootstrap server.Error: unknown error code. This generally means that another instance of this process was already running or is hung in the debugger.
What could be wrong?
Please give your suggestions, they are most welcome.
UPDATE
You can check this link. This may solve your problem. Couldn't register with the bootstrap Server
For me it has worked when I have killed the Xcode and Simulator Apps using Activity Monitor and then restarting those apps.
You can read these following threads: iPhone - strange error when testing on simulator
http://discussions.apple.com/message.jspa?messageID=10416765