$ERR_MSGFAIL
324
SEND/RECV message failure
Some failure has caused a message not to be sent or received. The most common causes for this error are that either you’ve exceeded the maximum message size of 4080 bytes or the Synergy message manager is not running.
This message is normal on a RECV statement if many messages are queued up and the message manager has not yet processed them all. In such a case, the RECV has queued another message in sequence, but the message manager has not processed it in the time the runtime has allotted for a reply. You should retry the RECV if you’re sure the message manager is actually running. This error protects the program from hanging if the message manager aborts; however, the time to wait depends on the processing activity and speed of the system, so you must determine if a retry is required.