I consistently get a very annoying dialog box every time I try to go from Lightroom (v5.5) to Photoshop (CC 2014) that says the application has moved. Apparently this is an issue when one has a backup drive running. I really think it's reasonable for Adobe to fix this.
This happens on both my MacBook Pro and Mac Pro computers. Both have backup drives running. And both are running OS X 10.9.4.