The Fairchild C-119 The Flying Boxcar is compatible with all versions of Prepar3d with the following notes
Use the Prepar3d_v3.x installer for P3d up to 3.x. Use the Prepar3d_v4.x for P3d V4.0+.
Remember to check the installation section of our questions page for more detailed information
We have changed the way that we ( aeroplaneheaven store ) Provides our products. You now only really need to download what you want EG you will be provided links to 3 installers. If you dont use FSX no longer then you wont need to download FSx installers
Updates and upgrades will always emailed to the email you used to purchase.