CRFCN0648E

Playback cannot be completed.

During playback channels provide a means of running code that requires GUI thread affinity. If the corresponding GUI thread is unresponsive the channel is also unresponsive. The request_name request that must be run with the channel is ignored. The GUI thread and the channel must be responsive to requests.
Close and reopen the application under test. Make sure that the current playback process is closed completely. Then play back the script again.