One of the players in our game apparently had a error in their macro which caused a JQuery error in the chat window and prevented it from updating. The error is persistent accross browsers (tested in Firefox and Chrome on Mac and IE). Firefox error message in the JavaScript console was: Error: Syntax error, unrecognized expression: #sheet-rolltemplate-13thage_power {{character_name=Nothus Septimus The fix for us involved the GM clearing out the chat log and/or the player clearing all the macros that they had created off their sheet.