Version 0.9.3 Bugs
Big bug due to a fat finger mistake in version 0.9.3. PERCENT_SCORE challenges will give you an Unsupported Challenge error when you try to add them. I'll get this fixed soon. It was due to a typo on my part, along with inadequate testing. To get around this bug, you can change your challenge file to be "PRECENT_SCORE" (note the spelling error) and then it will run. Or just wait for me to put out the next version, which could be tonight or several days from now depending on how busy the new baby in our family keeps me. Sorry for the error.