VLC Disable Errors and Warnings Window
For VLC on Mac OS X, it will repeatedly display error messages in an "Errors and Warnings" inspector window every time you open a video file. These messages include things like "OpenGL acceleration not supported" and other messages.
To prevent these errors from appearing, open Terminal and execute the following commands:
cd /Applications/VLC.app/Contents/Resources/English.lproj/ mv ErrorPanel.nib ErrorPanel.nib.orig
This will prevent VLC from being able to show the "Errors and Warnings" inspector window at all.