New blogger and you tube

I changed over to the new blogger because it made me.

All well and good until I tried to upload from you tube.

I changed my blog to the new blog (as the old one was not valid).
I used the username and password that I use to get into blogger to try to register (as it asks for these).

You tube keeps telling me its invalid.

Anyone else had this problem?

Bloody blogger!!!!!!!!!!!!!!

Any ideas ?