Slitherine

Sucessfully downloaded and played a number of multiplayer scenarios
However, downloaded Sea Lion 1941 v4.1 26-6-2019 and I cant 1) work out if its 1 vs AI 2) where to find the file to play the game (it is in my Scenarios folder but is not visible on Multiplayer Hosting Scenario list nor through Single Player mode.
Can anyone tell me what to do please?

That sounds like one of Erik's campaigns (multiple scenarios) which is strictly single-player. The entire unzipped folder goes into (Windows):
C:\Users\[your name]\Documents\My Games\Order of Battle - WW2\Campaigns

By contrast, individual single-player scenarios goes here:
C:\Users\[your name]\Documents\My Games\Order of Battle - WW2\Scenarios

Thanks Bru

Can single player files be used on a Mac?
Answer: Yes (wish I was more computer literate...sorry)

As long as the answer is 'yes' you have nothing to be sorry about