The project was created with multiple layers (visible or not) in Photoshop CC 2014, then this project has been opened Photoshop CS6.
a) When you copy all (Ctrl + A > Ctrl + Shift + C) produces an error: "Could not complete the Copy Merged command because of a program error."
b) When you combine all visible in a single layer (Ctrl + Shift + N > Ctrl + Shift + Alt + E) gives an error:: "Could not complete the Merge Visible command because of a program error."
c) When I restore of the project to a new location, I get the error: "Could not save as" ... my path ... "because of a"
Maybe someone knows how to overcome?
P.S. in another similar source code - everything is OK.