Bad News - Nymph paint job.

Hi everyone,
I recently painted my Nymph. Today I was walking around the hull
(fliped upside down on saw horses), and found the apint bubbled. Upon
closer examination, I found quite a few spots where the paint was
bubbling. My first thought was that I didn't wash the hull good
enough after I epoxied, but when I scrapped the paint away I found
that the primmer coat was intact. I used acrylic latex and the proper
primmer for the paint. I'm I am sure to find the same on the inside
but haven't looked yet. Bummer, as now I will have to sand the entire
hull again.
Anyone have any thoughts as to what would have cause this?
Thanks,
Rich
(and she was looking so, so good)