Hi I was trying to play with you meri avatar in blender and ran into a problem that it kinda holding me up.
When I open the fbx model the bone names get the word mixamorig added to the beginning of the bone name.this breaks the links in the fst when I export the fbx file
jointIndex = mixamorig_LeftShoulder = 68
compared to your original fst
jointIndex = LeftShoulder = 38
I have to manually change all the entries in the fst to get it all working.
I asked @Derric_Foggarty to have alook at the fbx model in max and the bone names for him also have the mixamorig prefix attached
Eventually i would like to mod some of the rigs but at the moment I cant open your builds and save them without them breaking the fst links.
I believe you use max, is removing the mixamorig prefix an option you have set? or just something it does by default?
*i can manually change everything but its a pain in the arse, and id like to make some of these avatars into things we can customize and play with and make up some videos so everyone can have a go at it.