Hi Papi,
Strange?? The scenery was designed for and used in FS9, in fact I only use it in a FSGW3 installation, so I know it works, also 50+ people have downloaded it, and no one else has reported a problem.
The textures are just DXT3, so no issues there. Just unzip, and place in the Add-on scenery folder in FSGW, initialise the scenery in the sim to add to the list, and go and find it! Try deleting the generated SCENERY.dat file in that folder, it will be re-generated and may cure your problem.
Interesting story of you seeing the Spanish Do24's. There were many versions of the Spanish SAR Do24's. Early ones kept all the turrets, but later to allow better rescue access they removed all the turrets. Others kept the middle and rear turret and removed the front one, and still later replaced the front turret with a small observation dome. So, with all the turrets fitted, it is not totally inaccurate, I have spent enough time on the Do24's so will now move on.
Cheers
Shessi