That was the log that I meant, but it is of course useless because you've started Zorro after the crash, thus overwriting the old log.

For determining the problem, please follow the procedure described under "Troubleshooting" in the manual. Edit Z.ini, set Verbose=30, then start the system again and wait if it crashes again. In that case please post the last 20 lines of the z12diag.txt here in the forum.