[Trevally.]

you should check to ensure that your "MODS" folder is in the correct place.
It should be in the same folder as your SH5.exe

Mine is here - C:\Ubisoft\Silent Hunter 5\MODS

Also - you should start a new career and not load your save game.

If you are using TDWs UI mod - make sure it is jsgme ready. The first subfolder MUST have a "data" folder in it