Upgrade to Cross v 2.0 - lost collection information


I'm using an Apple mac bok pro and U-Mix Control Pro, I've been using Cross DJ v1.7 for months without any problems.
BUT
I decided to upgrade to Cross DJ v2.0 to check it out, new features , sampler etc. (I know there are newer versions)
This worked fine, all my collection / playlist and history info loaded perfectly, but I had a few MIDI mapping problems, so for a gig I decided to load trusty 1.7, as thats what I know best.

When I did this, the old software (1.7) before loading said I had to save my collection, so I said OK, but when it finished loading there was no collection/ history / playlist info at all . I then tried loading v 2.0 and its exactly the same, no collection / playlists / history..
waaaaaaah I want to cry
I do have 3 files on my laptop that are mixvibes collection files, but none have any info in them


