Hi,Could someone please confirm whether or not 737-800/900 must be installed before or after 747-400 QOS to run properly. I have both sims on installations disks as separate products (not download installations from PMDG) but am having problems in getting the 737 installed.Thanks in advance.Cheers,Guy

Hi Guy:http://ops.precisionmanuals.com/wiki/PMDG_...7-400.2F400F.3FCheersPaul

I suggest you register your Aerosoft products on their website. This will get you access to their knowledge base and patches for your products. I think you'll find the answer there as well and also for at least the 738/9 an applicable service pack.

>Hi Guy:>>http://ops.precisionmanuals.com/wiki/PMDG_...7-400.2F400F.3F>>Cheers>>PaulPaul,Thanks for the link. I'm still a little confused though...!! The PMDG 737-800/900 copy I have is on a disk and was purchased through PC Aviator, not a download copy via PMDG. There is nothing in the instruction manual that mentions the need for 737NG 600/700 to be pre-installed.Guy

Hi Guy,The 800/900 version is a standalone software, you don't need the 600/700 to run it. In your case just install the 737NG and then the 747.