thanks for mentioning my post in the section where the multibit professionals are.

I went ahead and installed version 0.5.9 again on the same computer but in a different location. I now have both versions installed. On version 0.5.9 I was able to open the wallet (it somehow imported the key itself). I can see the bitcoins there.

In this post: https://bitcointalk.org/index.php?topic=170716.0        // in post number #7 they say:


"Some changes from testing 0.5.9:

+ The key.type persistence error mentioned in the previous post is legitimate (there is now a new category of key.type for encrypted keys that was not in 0.5.8. It prevents earlier versions of MultiBit reading encrypted wallets so is a good thing)."

This tells me I can't use any other version than 0.5.9. I'll wait and hope some multibit pro can help me out