Long story, but will try to keep it brief.Windows XP, latest updates.About 7 months ago I downloaded a 3rd party panel (b744pv1.zip)that I liked and installed itin some of my Opensky 747's and other 4 engine acft.Then about 3 weeks ago, I went to start a flight and got a CTD as soon as I selected the acft.I have tried others with same results. This has only effected opensky and other 4 engine acft that I havedownloaded. Whenever I download anything I always try it out to make sure there are no immediate problems.As I mentioned this panel was working fine for several months.Some clues: Had a automatic update for Adobe AIR 6.5 (?) which renamed the aircrfat AIR folders and turned the a brown color...I deleted it...no help.I belong to Two VA's and have downloaded acft and scenery, but always ck em out.Today after removng ALL my opensky 747's and other's, I noticed the DEFAULT 747's will not launch...select acft and pop ! CTD.And I have NEVER touched them!I am still troubling shooting, and would welcome any sugestions to make my life easier. :)Cheers,irish3

Hi,Do you have FSUIPC installed? Some panels require that.Hope this helps,

Yes, payware version.Am trying to figure out what all 4 engine acft have in common that regardless of the 3 panels I have tried to install they all CTD.Interesting note...my default 747's also CTD. However every other acft works just fine and I have quite a few in my hangers, so to speak.irish3