[Juri_JS]

HarryM is right, the problem is not caused by the DGen.exe file (sorry for the mistake), but by an error in the PacificPlanes.dat file.

Replacing the US F6F3/F6F5 entries in the PacificPlanes.dat file with the following lines should fix the problem:

Allies USA CFighter F6F3 390 4000 4000 default 1
Allies USA CBomber F6F3 390 500 500 1x10006xhvarap 1
Allies USA CBomber F6F3 390 500 500 1x10006xhvargp 1
Allies USA CBomber F6F3 390 500 500 1x1000 1
Allies USA CBomber F6F3 390 500 500 2x5006xhvarap 1
Allies USA Fighter F6F3 390 4000 4000 default 1
Allies USA FBomber F6F3 390 500 500 1x10006xhvarap 1
Allies USA FBomber F6F3 390 500 500 1x10006xhvargp 1
Allies USA FBomber F6F3 390 500 500 1x1000 1
Allies USA FBomber F6F3 390 500 500 2x5006xhvarap 1
Allies USA CFighter F6F5 390 4000 4000 default 1
Allies USA CBomber F6F5 390 500 500 1x10006xhvarap 1
Allies USA CBomber F6F5 390 500 500 1x10006xhvargp 1
Allies USA CBomber F6F5 390 500 500 1x1000 1
Allies USA CBomber F6F5 390 500 500 2x5006xhvarap 1
Allies USA Fighter F6F5 390 4000 4000 default 1
Allies USA FBomber F6F5 390 500 500 1x10006xhvarap 1
Allies USA FBomber F6F5 390 500 500 1x10006xhvargp 1
Allies USA FBomber F6F5 390 500 500 1x1000 1
Allies USA FBomber F6F5 390 500 500 2x5006xhvarap 1

And here the correct entries for the British F6F3/F6F5:

Allies England CFighter F6F3 390 4000 4000 default 1
Allies England CBomber F6F3 390 500 500 1x10006xhvarap 1
Allies England CBomber F6F3 390 500 500 1x10006xhvargp 1
Allies England CBomber F6F3 390 500 500 1x1000 1
Allies England CBomber F6F3 390 500 500 2x5006xhvarap 1
Allies England CFighter F6F5 390 4000 4000 default 1
Allies England CBomber F6F5 390 500 500 1x10006xhvarap 1
Allies England CBomber F6F5 390 500 500 1x10006xhvargp 1
Allies England CBomber F6F5 390 500 500 1x1000 1
Allies England CBomber F6F5 390 500 500 2x5006xhvarap 1