An unknown response returned from Snapshot backup attempt. Aborting.

The snapshot gets stuck at: Files: : plugins/cforms 21% (files 13/62)

Memory:
Limit256M Usage:163.75M Peak:165.25M

PHP runtime information
Display Errors Off
Error Reporting 4983 - E_ERROR, E_WARNING
Magic Quotes Off
Max Execution Time (seconds) 120 The value displayed can be adjusted by Snapshot PHP scripts.
Memory Limit 40M - WP_MEMORY_LIMIT defined by WordPress wp-config.php.
Open Basedir Off
Safe Mode Off
ZLib Compression Off

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