Hi, I am having a similar problem.
My old laptop died suddenly but I successfully transferred all my data from the old hard drive to my new machine.
I moved 'MixPad Projects' as one complete folder from the old drive to the new laptop and all files (.mpdp & .mpdp.ProjectData) appear to be intact. But if I try and open a song I get this message:
"The MixPad project is not opening correctly due to an unidentified problem. Have you moved or deleted any of the project files?"
I am using the same version of MixPad as previously.
Other MixPad files that I had on another external drive are opening as normal with no problems
All other files from the old drive (video, audio, photos, documents etc.) are working perfectly. It's just MixPad that isn't.
Any ideas or help will be greatly appreciated.
Thanks in advance, Nick