on certain conditions CME (latest version 7.6.001.03) freezes and is no longer useable till restart.
had the finder open and a few other objects. when highlighting several objects in a childfolder of CME- Browser with mouse dragging the error above occurs. no error msg is prompted.
This happens if you highlight object 2-3 times serially, even if just the CME main window is used. Right-click on the CME tab in the task bar fixes it.