Most assets can be removed just fine and will just disappear from your city. The exception is more complex buildings like train stations or any other type of public transport and networks (roads, fences, quays etc).You can use the Loading Screen Mod to generate a list of missing assets. It will list both assets missing from buildings (like props or trees you aren't subscribed to) as well as things that used to be in your city, but you should be able to use the report to find the ones that the save is looking for.Alternately you can upload your output log (player.log on Mac and Linux) and we can take a look. It will show one type of error for missing stuff that messes with the save, so we should be able to see exactly which assets you need to be able to load again. The log will also show us what's causing the crash in case it isn't related to assets you removed.This guide explains where to find the log and suggests some places to upload the file to, since we can't attach files here on Steam.https://steamcommunity.com/sharedfiles/filedetails/?id=463645931&searchtext=log

Originally posted by mateus.abracado: Dear Avanya,

Thank you for your answer. That's the link for my log:
https://ufile.io/yowc6zdf

Can you see what's wrong? Thank you for your assistance!

Huh, that file is massive! I think your game is crashing because of an error that repeats so many times that you run out of memory. Might be related to the stuff you removed, might not be.Firstly you have two assets failing because they're missing networks, though I don't think they have ever been placed in your city, so it might not be a big deal. You have one that's missing the tiny road from Network Extensions 2. And you have another that's missing Extra Train Station Tracks.To fix the error, try enabling Safe Mod through the Loading Screen Mod. It's explained in more detail here: https://steamcommunity.com/workshop/filedetails/discussion/833779378/1635291505029642401/If that doesn't do the trick, try subscribing to and enabling the mod Save Our Saves. Make sure you do this after restarting the game, so it's a fresh load.Let me know if neither of those work for you.

Originally posted by mateus.abracado: Dear Avanya, thank you for your help. I could open the saved game with "Save our Saves" and saved it in another slot. I did not open it yet because I was afraid to lose the log track.

In spite of been able to open the game, still an error message has appeared: "Object reference not set to an instance of an object". There, many asset have appeared as causes of this error.

When I tried to open the game in Safe Mode (it was not possible), I saw still 2 itens appearing in red (even after downloading Network Extensions 2 and Extra Train Station Tracks as you suggested). Furthermore, many assets appeared as orange in the screen and it was said that something was missing (I could not read in time).

May I do something to fix it? That's the link for the log:
https://ufile.io/paq4op8p

Thank you for your attention.

Good to hear you could open it again. That's a good sign. :) "Object reference not set to an instance of an object" error is normal when you have removed buildings, which were placed in your city. You will have as many of those as there are buildings disappearing in your city, but once you click through them all and save the city, they should be gone for good and not there next time you load.Try loading the new save you made without Safe Mode or Save Our Saves on and see if it works.As for the two items not loading, you can use the report made by the Loading Screen Mod to see what the problem is with those. If you open Options and find the Loading Screen Mod on the left, you can enable the report and pick where it saves the report, so you can find it.The things in orange (missing) aren't a big deal. Most (if not all) are just props or trees that were used to decorate some buildings you have. If you want to, you can get them, but it's just a matter of things looking differently. Personally I have around 500 missing items as there are some props and trees I just don't want to use, so I prefer to save the RAM for something else. If you want to find missing stuff, the Loading Screen Mod's report is again the best option. :)