It could be that the last SSE.exe file was corrupted during downloading.

I would suggest to delete that previous downloaded file and . . .
download the ShipSimExtremes_Setup_v135.exe again from your account !

See under Orders & Downloads section !

I did so a few weeks agoo / worked fine !

Good luck next time, Erik
PS After installing the game, you must update the version to 1.4 !