Hi, I just installed P3D and wanted to install the PMDG 737 800/900 and 600/700, then I installed the FS2Crew, but when I start the sim and press the PWR button on the FS2Crew Panel, I get an SDK error. Then, I press again and it starts working, until I have to start engines, when the FO says that A/C is not configured. I just burned all the options. I downloaded the last versions. I just don't know what else to do. If any ideas, they're welcome!

Hi Prepar 3D is not technically supported.

 

However, it should work since P3D and FSX are very similar.

 

Are you sure the Aircraft was configured for engine start? Did you have sufficient air pressure for engine start?