Mac App Store update issues after migrating to Retina MBP I had a 2011 MBP and I just purchased the new RMBP. I used the startup migration assistant to port all my data, easy.

But I'm getting weird issues, when I opened programs for the first time I was prompted to put in my password.

Now, I am unable to update my apps (so far IMovie and IPhoto) through the mac app store, I get this error:

I only have one account and I am logged in to that account.

I've followed the instructions regarding repairing disk permissions and re-indexing spotlight found here
I had this same issue when moving to my new iMac.  Unfortunately, I contacted Apple Support and even they could not solve the issue.

Eventually, they just gave me promo codes to purchase and re-download (for free) the iLife suite.

I would use this Mac App Store support form to contact them.