https://bugs.freedesktop.org/show_bug.cgi?id=35150
--- Comment #5 from Tobias Jakobi liquid.acid@gmx.net 2011-03-10 01:01:30 PST --- You need a 32-bit (!) compile of libtxc_dxtn. Use for example Marek's maintained version of the library from here: http://cgit.freedesktop.org/~mareko/libtxc_dxtn/