Hey Bombardier, just wondering if you've checked out BVE on El Capitan yet. I want to play...but it won't work
Open terminal and type mono_ (the underscore is a space)
Then drag the openbve.exe application into terminal (found in the open BVE package contents[contents->resources])
Then click enter in terminal.
I upgraded to El capitan and found open BVE 1.4.2 and 1.4.3 both didnt work.
I installed mono 4.0.5, left Open Al and SDL the same from b4 update.
Using this technique and creating an applescript for it worked like a charm.