Re-installing shared-mime-info and running the update-mime-database command fixed this.
Bug can be closed, I guess. Note that the update also trashed pam (I had to reinstall that and run the pam update script). Grub2 was borked and required a patch and a workaround. Firefox is now randomly crashing, and Civ V now segfaults on launch. It has been a long couple of days and everything is still not fixed. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to glib2.0 in Ubuntu. https://bugs.launchpad.net/bugs/1360522 Title: Post-upgrade from 12.04 LTS to 14.04 LTS, GTK cannot open .png files Status in “glib2.0” package in Ubuntu: New Bug description: I have had multiple problems with an upgrade from 12.04 LTS to 14.04 LTS. This specific issue involves multiple errors from GTK and other glib applications not being able to process .png files. The crash files refer to GError: Unrecognized image file format. GError: Couldn't recognize the image file format for file etc. All files referred to are .png Running gtk applications such as gimp produces a long list or warnings of the nature: Gtk-WARNING **: Error loading theme icon 'edit-cut' for stock: Unrecognized image file format The images load fine in gimp as images. As icons, nothing loads. I have reinstalled glib and libpng to no effect. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/glib2.0/+bug/1360522/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp