Steam had an update today for Rocksmith 2014, which began as I launched the app. I played last night, no problem. I noticed that the newest file in my dlc directory folder is "rs1compatibilitydlc_p.psarc", updated today. I tried playing offline, i tried deleting this specific file and launching without it and my game still crashes. If anyone has any insight, please help. Additionally, I started getting an Ubisoft message bubble on the main menu with some pretty old messages and news.