This exceedingly rare message means that the Script you are opening is missing one of its essential script lines.
Usually Q++Studio tries to compensate for this when opening a Script. If you still get this message, it means Q++Studio was not able to add the missing script line, and that the current Script is irremediably corrupted.
Solution
Make a note of the script name and ID (they are displayed at the top of the script editor), close the script, and then delete it.
Topic 108098, last updated on 22-Mar-2021