When you toggle from MTP to STP or vice versa some times sp_cop dies .When you start up sp_cop there are two post queues one STP queue and one MTP queue are created for the same queue.
We found a problem in a queue function that is called when the set post command is issued . However, this problem would only occur when import process is up when the command is issued.
The workaround is to stop the import process before issuing the set post command and then restarting import after the command has completed.
The set post command does not exist in 6.0 and the function that is called by the set post command is not used in 6.0. So in version 6.0,this issue does not occur..
