License problem when opening a SKP file but not when opening SketchUp directly


We are experiencing license issues at the office, when opening a SKP file directly Sketchup ask for licensing information, but if you open the software directly with the EXE the licens information is ok from last time you activated. This is happening with different users on different computers.



What version of SketchUp?
What license (Network-Standalone-Educational)?
Were are the files located?