Hi, thanks for the update.Unfortunately when I run the 800/900 SP1b I get the following error:Error Code: -5012 : 0x80070005Error Information:>SetupNew\SetupDLL.cpp (883)PAPP:PMDG 737 8900 NGXPVENDOR:PMDG Simulations, LLC. (http://www.precisionmanuals.com)PGUID:20708FD5-E94D-4097-A21E-E28564CDBC06$12.0.0.49974PAK@Windows XP Service Pack 1 (7601) BT_OTHER 15476.30498I have tried to re-run but still same message.Any ideas.Regards,Ian