Comment 1 for bug 1350858

I'd like to see if this problem can be reproduced, using your project, on a different system.
Not sure if it will help, but we may learn something.
Using hugin-2013.0.0, could you set the interface to 'advanced' or 'expert', and not opening the Fast Panorama preview window, load you images, then create control points, then save the .pto file.
Please add that .pto file as an attachment here.

Cheers,
Terry