I have this error at all servers.
File Server tests:
api.cgi: OK
temp dir exist: OK
temp dir mkdir: OK
temp dir rmdir: OK
tmp dir exist: OK
tmp dir mkdir: OK
tmp dir rmdir: OK
upload dir exist: OK
upload dir mkdir: OK
upload dir rmdir: OK
htdocs dir exist: OK
htdocs dir mkdir: OK
htdocs dir symlink: OK
htdocs dir symlink del: OK
htdocs dir rmdir: OK
config read: OK
config write: OK
fs.cgi: ERROR
Internal Server Error
The server encountered an internal error or misconfiguration and was unable to complete your request.
Please contact the server administrator, root@localhost and inform them of the time the error occurred, and anything you might have done that may have caused the error.
More information about this error may be available in the server error log.
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Apache/2.2.22 (CentOS) Server at mysite.com Port 80
upload.cgi: OK
htdocs URL accessibility: OK