With the new filesystem in wow WMV is no longer working, there is an alpha version out but it is not yet usuable. Sadly I don't have the link for the alpha with me (in school atm) but I think it's in the same place as the older versions.
At the moment we are kind of stuch with wowheads profiler to get renders. It's not nearly as customizable as modelviewer but it is better then nothing.
For all requesters: I understand that you are eager to get your requests done, however keep in mind many of us also plays wow and are just as busy adventuring in Draenor as you guys are
Keep posting, keep to the rules of bumping and maybe try PM someone with open PM requests (usually says in their signature). But I think a extra portion of patience is needed for the moment.