Because of hardware issues, FS9 add-ons work better for me than FSX add-ons.Unfortunately, sometimes I'm not able to access the add-ons (like Dreamwings Dash 8-Q400), but most will appear just fine. I've even had an aircraft that I couldn't access (IFDG A320). I put it into a folder of another IFDG aircraft and it worked. Unfortunately I can't figure out what is causing this, and what I need to do to the CFG file so I can access an airplane.

Because of hardware issues, FS9 add-ons work better for me than FSX add-ons.Unfortunately, sometimes I'm not able to access the add-ons (like Dreamwings Dash 8-Q400), but most will appear just fine. I've even had an aircraft that I couldn't access (IFDG A320). I put it into a folder of another IFDG aircraft and it worked. Unfortunately I can't figure out what is causing this, and what I need to do to the CFG file so I can access an airplane.

Are you looking under Airbus as the manufacturer or under IFDG ?Sometimes aircraft will under a different manufacturer label than you might expect.And do you have "Show all variations" checked on the aircraft selection screen?