Hello Tobias,
This is the reason:
WaitForInstanceShutdown: Instance 91 of system <sid> not down after 120 seconds.
Your central Instance needs to long to shutdown, so the whole procedure stopps.
It is a known 'problem', because JAVA needs a long time to start and to shut down.
Please increase the waittime accordingly
Wait for instance to end . . . . WAIT > *YES
Maximum wait time (seconds) . . WAITTIME > 600
and try again.
Best regards
Joachim