Thank you for the answer. This is not the first time I run opensim on this machine. The problem started when I run a model, then I clicked on File--->Close All and I tried to run two files (one a .mot file, the other a .trc file). I closed the program and when I restarted it I had this problem. What...

Hello to everyone, I have a problem with the Visualizer Window which is completely grey when I run a model as you can see in the screenshot (also when I just run the program without opening any models). What do I have to do ?