I have an avatar designed in Unity. When trying to upload it to VRChat using VRChat SDK. It works for a while and then stops with "Unity Application is running…Stop it to access the Control Panel ". At this point the Scene window switches to Game and the play button is showing as activated. Pressing the play button refocuses to the VRChat sdk panel, however it resets. There is no avatar saved or uploaded. It just starts back at the beginning.
This problem started after I had already uploaded a few trial versions of the avatar. So at one point things were working. One of the problems I was trying to address, was the ‘open mouth’. Just could not get that avatar to shut it!
I feel I am missing something obvious here. Have checked versions for the VRchat SDK and Unity, and am running the current (appropriate) ones.