Yeah but that are just warnings output by my add-on, nothing bad; an exception always comes with a stacktrace (lots of gibberish). I know the TexHackU repository, the file which is in there (for whatever reasons) should be fine IMHO. What GPU are you using? Can you open the converted DDS files of the work folder normally in a DDS viewer? And where did you retrieve the original MK8 files from?