I have an issue with my Panasonic TC-P50ST30 (Mfg. November 2011)

I have the profile "Panasonic Viera (2011 models)", and Mezzmo configured under Transcoding with "Transcode incompatible media files so they can be played on this device" box checked.

On some recent 2013 avi movies, the Panasonic displays "Cannot read file".

Is there a Device Profile tweak available for this Panasonic model that would solve this problem?