Model Viewer not working anymore

[secreit99]

Hey people. I need your help. so normally i had wow on a portable 150gb hdd. well yesterday i got a notebook (windows 7 like my pc) and i moved wow from the portable hdd to my notebook. then i noticed that i will need it on my pc too so i made a copy to the portable hdd (ye i know i could have just left it there... ) then i connected it with my pc and copied my wow there.... a very complicated shit that i could have done much faster and easier... ok so i now have wow on my pc, notebook and the hdd and now my modelviewer is not working at all. not on the pc and not on the notebook. i get this error:

it worked all the time be4 i got the notebook (also on patch 3.3.2 it worked) i hope somebody can help me. (sry for the shitty text. hope u understand):wave: