So, I can't use the time acceleration anymore. It has disappeared from me before, but I could sometimes get it back. Unfortunately, I can't remember how I did it (Pause, Go to Options, Minimise Screen ... I dunno, but it was something like that). I know acceleration worked before, because I would use it for the starting waypoints during the climbing hex path.
There is a luacript missing that I can't yet find (rivergunshipa.txt) that might be causing the glitch as the game bounces to the Windows desktop when the load error comes up. I cancel the error boxes and carry on with the mission.
I have the standard PWCG setup i.e. I didn't add any more objects or planes. I've got a decent machine and graphics card so that shouldn't be an issue. Like I've said, I did have acceleration on some previous missions.
Any thoughts? Thanks.