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 !