Lync Server 2010, Response Group Service was not able to start the collaboration platform. An exception occurred when the ...

Lync Server 2010, Response Group Service was not able to start the collaboration platform.

An exception occurred when the collaboration platform was started.
This can occur if another application is already listening on port %1.

Service will try again in %2 seconds. Remaining attempts: %3.
Exception: %4
Inner Exception: %5