This was because the integration of the filemenu was in a WIP state when this build was created.0 KEY SHORTCUT PROBLEM IN MY MOVIES
Another problem I noticed: as per MP configuration keyboard shortcuts, 0 key is supposed to take you to "Delete selected movie" in My Videos and "Delete Selected Recording" in Recorded TV. In the current version of MediaPortal this is true for TV only. In My Movies you get to a choice of Rename, Delete or New Folder after pressing 0. Since Delete is very popular function, I think 0 key should stay dedicated for the delete function only in both TV and Movies. It would also be nice to be consistent. The logs (if required) are two posts above.
Now "0" directly opens the delete dialog window, or it will ask for the PIN first if one has been set.