Sometimes Backup works, sometimes not :: "ERROR: failed to locate and extract VM_ID" but no special characters used.

Hi,

I am faced with the issue, that the ghettoVCB script in the last weeks doesn't work reliable for me. I use this script without any changes for years without any issue but since 2 weeks the scheduled Backup only works from time to time.

The Logfiles on failure shows:

http://pastebin.com/hAh1N5PK

But they day before everything works as expected and all machines were backuped - I am running a daily cron job.

Today I triggered a manual backup and this also worked.

There were no ESXi Server restarts in between...

Does anyone have an idea?

Thanks,

Christian