Combat Tracker. It threw errors in the middle of setting up conditions. I haven't delved very deep in the api, and was testing out that with tokenmod. I tried disabling and then removing all other scripts from that game, but CT kept throwing an error. I copied the game, reinstalled all the scripts and it worked for about a half hour. Then it threw a bunch of errors in the api console. But now it is working again. I think there is something going on with Roll20. Weekend gremlins.