Desk top PC using Windows 7, 64 bit. I do a successful Save with the layered psd file, then flatten the image and try to Save As a jpg version to another folder on the hard drive. When I choose jpg as the file format, I get the Windows message that Photoshop has stopped working and will be shut down. I can open the same image in PS CS 6 and do the same thing, and the Save As works fine with the jpg image. This happens about half the times I try to save jpg images (e.g., for use on Facebook, etc.).
I'm not sure if this gives you the info you need. My initial inquiry was to see if anyone else had this problem with PS CC.
Interesting development: If I load into PS CC an image from LR 5 (Ctrl+E), work with it and try to save it as a jpg file, PS CC crashes. This will happen over and over again. HOWEVER, if I open an image into PS CC via LR 5, work with it, close it as a psd file, then open the image directly from PS CC (File>Open), and then try to save it as a jpg file, everything works fine. From that point on I can save images as jpg files no matter how they got into PS CC (i.e., it works fine until I close down PS CC completely and re-open it later -- in which case I have to do this process all over again). This situation never came up in PS CS6, so it must have something to do with the LR 5/PS CC communication.