This issue popped up recently. I just did some debugging and I got this error message:
iTunes got an error: application support folder doesn’t understand the “path to” message
However, I'm not really sure when iTunes decided it didn't support this. So, for now, I've commented out the album art portion of the script which is where this error originates. At least now it displays track info! As soon as the album art portion is fixed I'll upload another new version.
For now, updated version with the now playing fix is below. I also fixed a small error with the microphone mute button always displaying
Download: goldenchaos-btt-2.531.bttpresetcompressed (3.4 MB)
GoldenChaos-BTT beta 2.531. Exported with BetterTouchTool alpha 2.531.