Hi spyder, go back to Daz, and on the page that sells the Expansion Pack, scroll down and there is an update for the pack for users of ProPac. I bet this is what you are missing! (: Since I loaded the Expansion Pack and the update imediately after I really don't know if I was missing the "Birds" files prior to the installation, but it is worth a try.........and the update, as usual, if Free. Take care and I hope it works for you. Genny