I appreciate all suggestions
But sadly nothin has worked so far.
I have tried deleting the original DRAWLINE.cox, copying the CHANGEANIMSPEED.cox, and renaming it DRAWLINE.cox. I tried opening the Application but got the same sad message.

One thing i have noted though, is that the extencion file i download is called DRAWLINE.cox, while what MMF2 says is missing is DRAWLINE.mfx, could this be the core of the conflict?

I have allready tried renaming file to .mfx in both scenarios ( original extencion, and 'fake' renamed file ), no luck however