"Action cannot be completed" error

[kunkel321]

This annoying thing:


It has happened a couple of times when I've tried to open a file. Just now though, it happened when I tried to go from single to double-pane. Eventually it stopped doing it by itself (Usually I have to kill the XY process). Any ideas what causes this?

[admin]

I think this is related to a non-completed drag-and-drop operation, like waiting for a callback from the receiving process.

Can you reproduce it at will?