I have premiere on both a Mac and PC and I run into this problem about once or twice a month on both. When I open up Premiere, the dialog box that first comes up that allows you to open recent projects is empty. So I manually find my project file and open, only to find Premiere has reset my project preferences, sometimes loses my "favorite" effects in a folder I've created. I have to reset default transitions and times, etc.
Not a life changing issue, but it sure is a pain in the rear.
Any insight to this problem?
Dell T76000 Dual 8-core 2.4 GHz
NVIDIA Quadro 2000
NVIDIA Tesla c2075
Adobe Premiere Pro CC
After Effects CC
Cinema 4d r14