"unexpected file format" -help!

[heidiyamada]

Is my project ruined if when opening it I am greeted with "unexpected file format?"

I am using Video Studio 9.0

[Ken Veal]

the red line tells you the length of a range of video-"the preview
range" that has been selected when, in the project mode, you want to create a video file of the preview range.The PR can be selected either by
dragging both of the trim handles(the little triangles at the end of the red line) or by dragging the triangle along the time line ruler and pressing
F3 +F4 to mark the start and end points of the PR.
To remove the red line, in the project mode, move the left
trim handle 100% left + right trim handle 100% right (start + end points)

[heidiyamada]

Does anyone know if the created project is lost if upon opening the project "unexpected file format" window appers and will NOT let you open the project?

[heinz-oz]

How do you intend to open it, if the program does not allow you to open it?

AFAICT, it's ruined already

I seem to remember another user claiming his file became usable again by renaming it and then opening the renamed file.