{{msg-mw|Mwe-wgfogg warning bad extension|notext=yes}}
Needs link update to http://commons.wikimedia.org/wiki/Commons:Firefogg#Supported_file_types , probably a text replace "Supported_File_Types" "Supported_file_types" should do it.
Needs link update to http://commons.wikimedia.org/wiki/Commons:Firefogg#Supported_file_types , probably a text replace "Supported_File_Types" "Supported_file_types" should do it.