It is a manual setting @ the moment.
AdminCP => vBGallery => Maintenance
-- Change File Storage Method
This tool will allow you to change the way your files are stored. If your server is running in safe mode, you may use this tool to change the way your files are stored.
Click the 'Change File Storage Method' button below to turn the safemode bypass On.
If set to "Off" this will enable php safe-mode.
If set to "On" this will operate with out php safemode.