Mhhh.. i have a similar but not the same issue as
malkuth74 using the All in One mod on a clean SH5 install, with 4gb patch.
So basically, I just started a new campaign right from the start and it asked me whether to skip the introduction. I clicked *yes* and the Introduction mission started anyway. well......
Secondly, after getting back to Kiel everything goes smooth, until I hit END patrol. At which point
1) the save created is corrupted, ctd's when trying to load
2) the game crashes to desktop with a "This application needs to close"
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The second problem is, when creating an entirely new captain profile it doesn't even ask me to skip that mission anymore. And ctd's right when the first tanker explodes.
So someone down there in the depths CERTAINLY does not want me to play SH5 with this mod.
I am really at a loss here