WD TV Live Question - "File format unsupported" - Help Needed

[JKDRat]

I too am having the same problems....I can finally see the movies on the Mezzmo server. At first the Mezzmo server kept not showing any media, my WDTV box kept saying "No Media Present on Drive". Now, i can see the files, but when I try to play them it says File format unsupported (on the WDTV Live box). I do have WDTV Live selected, transcoding turned off, streaming an MKV file, which WDTV can play without transcoding being necessary.

I also think that a 15 day evaluation period isn't long enough to see if this software is worth buying...especially with these types of problems.