Ok, so I've been practicing rigging mesh for a few weeks and have been able to successfully upload models in the past. Recently, I've been having some uploading issues. I get this error message, "material of model is not a subset of reference model" I've googled this to see what it means but I'm still not clear on a solution. I've rigged the mesh in Maya 2012 and a few days ago, I was able to upload the same rigged model with no problems. The only thing I've done differently this time around was that I imported the non rigged model in Zbrush 4 to for sculpting. Then I exported it back into Maya for rigging. I notice when I exported the model to .dae in Maya the object appeared jagged and I have no clue why. I uploaded it anyway just to see if it would work and it did. After that, I went back to maya and added smoothing (by 1) to the object and tried to upload the model again and I got the error message. I don't know if its Zbrush causing this problem and since its the same model I doubt the poly count has anything to do with it. Any suggestions is much appreciated, thanks in advance.