Myriad Pro problem when going from CS4 to CS5

Hello,

I’m working on a banner for a client.
When working on CS4 it displayed the Myriad Pro font in dynamic textfields.
But in CS5 the textfields turn up blank.

The font i embedded correctly but doesn’t show up.

Myriad Pro Regular works like a charm, but Myriad Pro Bold
doesn’t show up at all. Sometimes when i open up the fla in cs5 some text have graphic fault looking all stretched and tweaked. Restarting Cs5 a few times removes the graphic errors

Has anyone encountered this problem or have a solution to this problem
please share it.

/h