@luca & @enmei

Mentioning the missing rail and road network, i checked missing mods on the right side. And i forgot the "Network Extensions 2", "Extra Train Station Tracks" and "MoreTrainTracks". I added them all to the right side. i hope it will fix your problems.

I'm only leaving alot of messages because the error pops up everytime I load a save but it only seems to actually affect the map which you created.

This is a really nice looking map, I can't wait to get it to work btw.

I will make sure to check on loading screen mod though, so that should help too.

So just to confirm, the road replacer mod helps you replace any networks that are missing. That should be helpful. But just to make sure, are there any mods or assets that you forgot to put on the page???? Not trying to be rude, just wanting to see if my it's my memory failing or the mods.

Thanks for the help everyone! Now time to deface this map with a city that is supposed to be French but looks German with buildings that are from the Czech Republic!!!!!

Are there any assets required that you haven't got on the right side of the screen, when I load the map in the map editor there are a lot of gaps in the rail network and along parts of the road network.

@luca & @enmei

Hmmm, the mistake of not loading the map is something i did not know before - sadly it's my first map and i've no big mod-and-workshop-knowlegde. I found this: https://www.reddit.com/r/CitiesSkylines/comments/37ufuj/bug_how_to_fix_object_reference_not_set_to_an/ and also this: "This is apparenly caused by the Traffic++ (zonable pedestrian paths addon) due to a recent update. Enable ghost mode for the time being." As i said, my knowlegde isn't that good, but may https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=667342976&searchtext=loading+screen+mod is helping you to find the missing tile or asset.

@luca & @enmei

The error you are mentioning happens mostly because there should be an object on the map you don't have. Nearly every time it is just a tiny bit of road somewhere. You can try this road replacing mod, it helped me a lot.
Road Replacer

meine Heimat XD

The map is failing to load, I'm getting the same message as luca mentioned.

My game keeps failing cause it says Object Reference Not Set To An Instance Of An Object. Is there any assets you used that are not on this page??????

The scale should be fine, something like 1,03 : 1. The Rhine is more narrow in this region because of the middle high mountains on the left and right. But may i did a mistake while i was terraforming the riverbeds..?

looks intesting and it is good recognizeable, but is it in a real scale? The rivers look a little bit narrow