LR5.0 fails to launch CS6

Sending an image for editing in CS6 causes LR to lock up and CS6 doesn´t launch. I have to use Task Manager in Win8 64 to end the LR processes.

CS6 13.0.1 Win8 64bit LR5.0 ACR 8.1

edit

Repair didn´t work. I reinstalled having uninstalled first. But I didn´t delete the folder or anything else before the reinstall, maybe I should have??