It seems to me that overriding the next station with Smarter Trains mod fails in certain situation.

Based on my testing, the problem is triggered if the next station in the line is full (meaning it has train limit set, and no free slots for more trains). In this situation the train selects the next stop in the line, even if the line rule says to go to a different station instead. Attempting to use the signal lamp to redirect train to different station does not help -- the result is the same: If the next station in line config is "full", that station is selected.

Also, is there a limit as to how many stations can be on a line? I tried working around the issue by having extra stations on the line, but once I got something like 20 stations I started to get assertion errors when clicking save on the train line. However, this issue is not major. If the original problem can be fixed, I don't need more than dozen stations.. :)

Oh. Forgot version information from the original message.

Factorio version = 1.1.57. Smarter trains = 5.1.1.

There is a bunch of other mods installed, I don't think this is a compatibility problem with another mod. (The only other train related mod is nuclear locomotives). If necessary I can try to make a savegame with just this mod to demo the problem. Let me know.

Should be fixed in the next version.

If the next station is full and the current station has a station # set via circuit or the SmartTrains gui it will go to that station. (If it left early only, e.g. no waiting time has been set or another condition got fullfilled earlier. But that part is how it has always worked)

Not sure if it's a good change, haven't played in more than 3 years and even longer since I really used SmartTrains.