I'm getting a fatal error when copying a slide from one session to another. This is a last ditch effort trying to solve another problem/bug where the Properties panel has disappeared and the suggested fixes have not worked. I have wasted an hour on this problem so far. Anyway, suggestions for fixes are appreciated.
Sure you are on 11.5.5? I don't give the rest of the full number becauseit depends on the OS.
I am on Windows on that new version. I just double-checked and had no problem to copy/paste slides from one project to another project with the same resolution; If the projects have different themes the usual button appears under the slide where you can choose between Source and Destination theme.