completely unistalled fs9 and reinstalled.I get the error "error type 9". I suspect the problem lies in not accepting the default "c:" drivespec during the fs9 install. I installed on my "E" drive. I hope this is not the case as the update exe is installed in the root fs9 folder as required. Not using sp2. If this is the problem I find it hard to believe that MS did not check this and it search's for the fs9 exe on the "c" drive. Anyone else ?Regards Bob

No problems here. FS9 is on my D: drive (partition). I downloaded the Update.exe to the FS9 root folder and then clicked on the .exe. The update saw the sim in it's correct location and did the install without incident.Greg

HiCan you give me the exact size of your fs9update.exe file?The only other thing I can think of is the exe is faulty.ThanksBob

Was lucky to download in about 3 minutes, patch installed in just under 10 minutes without a hitch. Now the hard part, flying enough hours to be able to say that the patch helped with CTDs of various types. Well, on with it then!!Randy Jura, KPDX

"Can you give me the exact size of your fs9update.exe file?"The original: File version 9.0.030612 6/12/2003 1.32MBAfter update: File version 9.1.0.40901 The date and time you made the update installation 1.32MBHope this helps,GregP.S. Randy... aw shucks! Does that mean we HAVE to fly??? :-)

Are you indicating you placed "fs91upd.exe" into the root folder ..Flight Simulator 9? If so, I recommend moving the file to another folder on your hardrive and trying the installation again. I wouldn't put this ~27.4MB file in the ..Flight Simulator 9 folder. I would also reread the entire readme file at the download site to ensure you have met all the default requirements for the update installation.I have "fs91upd.exe" located on a separate computer on my LAN. I installed the update to two computers over the LAN without problems. Each computer uses different locations other than the default drive C:.W. Sieffert

Error type 9 is usually indicative of an incomplete download.Allcott

Thanks All. Yep I was short about 120 bytes. That'l doit.Have funBob