Hi Flag4 you could try the SH3 Download link i sent you unpack with 7zip then place it on drive C:/ but outside Program files x86 then all should work fine so you no longer need the steam version.
The SH3 ive sent you is the same one i sent Doolar but the one i sent him was a dvd a while back.
also its already patched to 1.4 The Mod Guru's have been looking after Onkel Neal's Navy for years its a calling a Line Chiefs job is to get the fleet at sea happy hunting
4Gig Patch download
https://www.subsim.com/radioroom/dow...o=file&id=5737
Commander Mod 3.2
https://www.subsim.com/radioroom/dow...o=file&id=4789