I had a look at your city. Just to test, I despawned all traffic and left the game running half an hour. I didn't have any empty trains spawn in that period. I just subscribed to all mods the save asked for, but there are some overlaps, so let's have a look at your log for good measure.
We'll need to see the output_log.txt (called player.log on Mac and Linux). Here's where to find the log depending on your operating system. To easily find the local files for the game, right click your game in the Steam library, select Properties, go to the Local Files tab and select Browse local files.
Windows
\SteamApps\common\Cities_Skylines\Cities_Data\output_log.txt
Mac OS X
Users//Library/Logs/Unity/Player.log
Linux
~/.config/unity3d/Colossal Order/Cities: Skylines/Player.log
As we can't attach files here on Steam, you will need to upload the file somewhere else. Here's a few sites you ca...
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