After install the rFactor2_SDK_798, I can't start it. I always pop up the same error message from the launcher: "Failed to launch Mod Development Tool. Ensure that rFactor2 Mod Mode 32bit.exe is located in Core and this application is in the root of the install directory." Using Windows7 64 bits. EDIT: SOLVED. See: http://isiforums.net/f/showthread.php/21005-Devmod-798-Build?p=294183&viewfull=1#post294183 View attachment 14047