[Raptor1]

Originally Posted by Nisgeis

Hello Navy_Gunner, the 1.5 U-Boat add-on should just install over the top of 1.4, when you run the setup - what problem are you having? There's some install instructions here that may be of use:

http://www.subsim.com/radioroom/showthread.php?t=133290

You can install it over 1.0 too and it runs just fine