thanks for your answer.
Yes, it's reproducible. I select an object (rectangle for ex.) in yEd Editor and press CTRL V or rightclick and select copy.
Then I open powerpoint or what ever, and try to paste it, but paste is greyed out or I get the former content of the clipboard.
It behaves the same in windows 7 and XP. Its yEd 3.9.2
If you give me a responsive email, I can send you additional information.
By the way: which file(s) comprise the profile?