I have recently made the jump to p3d v4 and installed my pmdg planes, 737,777,747 two of which work but they both still do show this message "the pmdg product was unable to make its work files" the 777 and the 747 still start the sim and seem to work fine but the 737 crashes the sim every time i try to boot it up.

2 hours ago, kentony101 said:

I have recently made the jump to p3d v4 and installed my pmdg planes, 737,777,747 two of which work but they both still do show this message "the pmdg product was unable to make its work files" the 777 and the 747 still start the sim and seem to work fine but the 737 crashes the sim every time i try to boot it up.

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Misread the OP, deleted

Edited June 28, 20187 yr by Ephedrin

On 6/27/2018 at 11:27 PM, kentony101 said:

"the pmdg product was unable to make its work files"

This means that the sim is not being run with enough privileges to create the files that are required for it to work. In other words, Windows (and/or an anti-virus program) is preventing it from working properly. The first step to solving this is running your sim as an administrator. Right click the sim icon and select "Run as Administrator."