It's a pity it isn't working for you. I can't think why not. Hopefully Captain Sim Support can help you.

Here is something strange that happened to me: When I first got CS757 Pro Pack I noticed that when using ACE I had to first save without winglets (by default they weren't there), then select winglets and save THEN they would show. If I didn't do that then my 757s didn't have winglets. That was really strange, but it worked for me. In the current version of ACE I don't need to do that and everything works like it should.

Mark