I´ve been attempting to make a number of scenarios lately, but to no avail (I have a lot of experience in the editor). As far as the player train goes, there´s no issues whatsoever. However, whenever I add any AI locomotives or units (even without adding a driver to them), as soon as I load into the scenario the game freezes in the loading screen, and gives up. As you can imagine, this is quite frustrating. I should add that all the scenarios in question have been using French trains (SimExpress etc) on French routes. As soon as I delete the AI trains, it loads in without any issues. If anyone has any clue what could be going on here I´d greatly appreciate some advice. Many thanks.