I've had MultiBit HD do something similiar... where it won't activate the "next" button for some reason... I usually just click "previous", reselect that i want to restore and try typing the 12 words in again (NOTE: don't try and copy/paste it in either).
You can also double check your 12 words here: (NOTE: Run an offline copy to be safe!)
https://iancoleman.github.io/bip39/It even offers suggestions for mispelled words

Thanks, but I tried many things including checking the 12 words on that site, which says invalid mnemonic. So I'm really not sure what to do, I will PM my 12 words to the few that answered, maybe one of you can figure it out and let me know what the problem was. I'll be happy to give a part of the coins I am waiting for (not BTC).