I had to struggle quite a bit to find out how to get my Silent Hunter III with GWX 3.0 (and Sh3Commander) on Windows 10 64-bit up and running. In the end it came down to 2 very simple things:
1. SH3 needs to be run in compability mode for Windows XP (other compatibility modes might work as well).
2. Also I had to make sure that the in the Documents/SH3/data/cfg/main.cfg file (edit with text editor) "Synchronized=Yes" is the option, or I would just get a black screen when trying to start the game.
That was it, runs perfect with Ahnenerbe WideGui 1920 x 1080 and a bunch of different mods and everything. Hope this helps.
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