So I managed to get some info from the debugger. "An unhandled exception ('System.IO.FileNotFoundException') occurred in CCC.exe .
I also had same problems with 15.7.1 catalyst also used beta 15.11 would get blue screen and freeze up computer What worked for me I am running windows 10 64 bit Build 10240
I uninstalled all drivers using amd clean up utility found on their site rebooted my computer and let windows auto update the working drivers for amd video cards Since than I had no problems running bf4 ultra in crossfire with no problems or freezing etc.I will wait to update when they put out a good compatible catalyst for windows 10.
You can try to remove the Beta 15.11 with the DDU Software in save mode (F8 during start up)
Use the DDU removing all AMD drivers and Nvidia drivers if still installed.
Let your computer reboot and install the 15.7.1 driver again.
So you have a fresh driver install
I always go this way when I uninstall drivers, done it twice for this problem and still problems with CCC.exe.
I'm going to try Dkwolfe's way of installing it, let windows install hopefully the latest driver for AMD.
If it wasn't clear, I am using Win7 64bit.
If you are running windows 7 64bit. I would use the 14.12 ccc drivers as they seemed to be very stable with windows 7 it seems there are a lot of problems with 15.7.1 across all
windows operating systems as I stated they will improve with the next update in their drivers.I ran windows 764bit no problems @all with the 14.12 drivers games all maxed out in
crossfire.Hope this helps you some what..dkwolfe