Frame Scripts have been commented

Using Flash CC

Made up a new Air 3.9.0.1210 desktop FLA, added on an existing working class file checking that the class manes etc were correct.

Got an initial error saying "Initial content not found".

Remarked everything out and started to un-comment parts, eventually all worked without change.

Started to copy a movieclip from an existing project, and got the following message:

Warnings generated while copying/importing in FarmerBlake.fla:

* Frame Scripts have been commented

Have 4 other projects setting up the same with no problem...

Anyone have an idea on how to stop imported items from being edited. Thank you