find the old back up, and restore it. return things to prior to adding the 206.
then try again, and try slot 4 for the 'new' 206 as well.
also swap it for one of the other 206's and see if it works there.
could be the 206, or the 5 slot carrier.
You do not always get what you pay for, but you never get what you do not pay for.