I recently switched from Movie Battles II V1.3.1 (non-launcher, 9-17-2015, moddb) to the fixed launcher shortly after the fixed launcher was released. For the past week I've been trying to get MBII to work with the launcher but with no solution. My problem is whenever I launch MBII with the launcher, I keep getting a "Z_Free(): Corrupt zone header!" error from the console. I am using the Steam version of JKA and I have Steam Connection checked. I did not mess around with the launch properties on Steam for JKA. I have no idea what is causing this issue nor how to fix it. Any assistance would be appreciated.