Just downloaded PS CC 2014 and LR5.
PS seems fine, but LR5 will not open at all. I've tried to delete the app from the apps folder, and reinstalled via CC Application. Still no luck.
My system is as follows:
27-inch, Mid 2011
Processor 3.4 GHz Intel Core i7
Memory 16 GB 1333 MHz DDR3
Graphics AMD Radeon HD 6970M 2048 MB
Software OS X 10.9.3 (13D65)
Retrieving data ...