This would be too stupid to be a true bug but it is happening to me:
repro:
Open old complex nuendo 5.1.1 project. 5.1.0 is ok. If I create a new simple 5.1.1 project all is still ok.
Press 2 or select Range tool. Select something on an event on audio track.
Hit Ctrl+C or menu Edit->Copy
Nuendo freezes.
This is weird since it does not happen on new 5.5 or 5.1.1 projects. But it does happen on two of my old 5.1.1 projects.
Anyone encountred something like that?