I had previously mentioned refresh error in tree . To which you already responded. I also notice that when a directory is deleted and then you hit the back button to return to that deleted directory you get an error message. The behavior in Explorer is much friendlier. It will return you to the adjacent existing directory. Most times you know you deleted the directory and just want to get back to that part of the directory tree (the reason for hitting back).
Running a cmd script Opening a cmd box in that dir by pushing the lightning button, typing in the name of the script and pressing enter, it does what I should do. This happens to all my .cmd scripts, not only one. They also work when started by double clicking them in a normal explorer window. Maybe the workpath isn't correct?