The reason the migration fails is that your project was created with one of the early betas last June -- this is from before we enabled automatic migrations, because the schema was not stable yet.
However, you clearly qualify for the early adopter bonus. There are a few ways we can go about it, but I think the best approach is to migrate only the project's data to a new project rather than trying to manually migrate the schema. I've taken a first stab at this -- can you try opening the project below and let me know if there are any issues with it? When you open the project, select
File -> Consolidate Photo Library and give Tropy some time to re-build the image cache. If this looks good I'll migrate the other project and post some instructions here.