Can't select 1.8.0 as maximum openttd version

[xarick]

I want to make one of my NewGRFs unavailable for 1.9.0, as the problem it solves is already fixed. I can only select 1.6.0 as maximum version. I need to be able to select 1.8.0.

[kamnet]

What about "Custom"? I think I had that problem a few years ago, but I don't remember exactly what it was or the solution. (I know, real helpful! )