Skin modifier randomly stops working CAT rig.

[pberubeVL96G]

I've got a character rigged and skinned and it is working fine.  When I bring the character into a scene it still works fine.  However when I close the scene and open it back up the skin modifier stops following the bones. The skinned character returns to the T pose and remains there as the CAT rig animates.  I've noticed that the skin modifier also randomly stopped working as I was working on the scene.  

[DanielCantin]

Hi @pberubeVL96G 

Can you share the problematic scene to try to repro the issue?

Can you also give us more info:

1. what version of 3ds Max?
2. Is this happening only with this asset or is a general issue on your system?
3. Is this happening on multiple system?
4. if this is happening only on this asset, is there anything particular to it?

Sharing a video of your repro steps would also greatly help as sometime a tiny detail make all the difference

Thanks for reaching out with your issue, hope we can help.