Thank you. I downloaded it, but im missing somtehing again
This scenario asks NewGRF "AlternativeBaseCosts", which is missing. Load button is disabled. In cenario editor - also the same.
The scenario asks for the file altbasecost.grf version 1.0, which I cannot find anywhere anymore. However, if you use the in-game content download service, you will find version 1.1. Download this and the scenario should detect it and run without any issues. This is the safest way.
Can i somehow skip/ignore that NewGRF: i just need a map with cities, industries etc. But i do not need to alter any base costs. Default costs is ok for me. In another words - do scenario file becomes useless - if any of NewGRF linked to it are missing?
Once a scenario is created using a NewGRF, removing that NewGRF is not advised, especially if it alters the economy in the game. A base cost NewGRF most certainly does that. Any changes to a scenario may make the scenario unstable, cause a crash or introduce other glitches. If you wish to do that, you will need to find the instructions to enable Scenario Developer mode, then remove it via the Scenario Editor and save it before you play a new game.