Are you trying to launch a sim in Firefox, and are presented with the following message?
This means Firefox needs a tune up! Follow the instructions below to successfully run the sim in Firefox.
Step 1: Type about:support into your Firefox URL bar
Step 2: Go to graphics section. Check for WebGL related graphics errors.
Ex: Has WebGL been disabled due to a previous crash?
Step 3: Give Firefox a tuneup
Refresh Firefox by clicking button in top right corner under "Give Firefox a tuneup"