Hello;
Nikron has reported a way he managed to work around the ROP battle CTD, which has been reported by many people, and occurs just before the game should switch from loading screen to battle screen. The way he got around it is by letting the game use "auto-detect best-performance settings" in the Video Settings tab (accessible from Main Menu).
Also, turning on unit shaders is reported to help solve the issue.
After some thought about this on my side, I presume that this is caused by an incapable version of the preferences.txt, which we have bundled with ROP Beta 2. So you could also try to delete the preferences.txt file from the [installation folder]\preferences folder.
Best regards;
-Nero