Replying to Shredsauce Not Working

Despite literally trying every browser possible on mac and windows, everything in the FAQs, and contacting Malcolm (who has still not replied), I keep getting a blank screen or an error message that says:

"An exception has occurred, but exception handling has been disabled in this build. If you are the developer of this content, enable exceptions in your project's WebGL player settings to be able to catch the exception or see the stack trace."

Anyone know anything that I could try? or is having similar problems?