Upgrade to 3.0.4 on Mac - error code 3

Upgrading from 3.0.3 to 3.0.4 Build 1386 on OS X 10.9.2. I've upgraded on Windows 7 with no issues.



After download completes and message for installing is displayed,



ERROR CODE: 3

File IO Error: Error occurred while writing file to disk.

cmd 4.0.4.84 tar: Child died with signal 11tar: Error is not recoverable: exiting now



I've upgraded on Windows 7 with no issues. Also have upgraded on the same Mac a couple of times before and never had any trouble.



Ideas anyone?



Thanks,

Rob