Whisky
Cities Skylines 2 Crashes #560
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I followed the Cities Skylines 2 instructions on the Game Support Page -- the Paradox Launcher starts, I leave the default settings and can click Play to launch Cities Skylines 2, but the screen goes black and after a little while a Unity Crash Handler appears with the below error thrown from cohtml_unity3dplugin. I'm not sure if I'm doing anything wrong? |
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Replies: 7 comments 30 replies
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Try installing this in your bottle https://dl.winehq.org/wine/wine-gecko/2.47.3/wine-gecko-2.47.3-x86_64.msi |
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Thanks very much for the quick response. Installed it into my bottle and saw it created a new c:\windows\system32\gecko folder. I tried launching again but received basically the same error with a new 'thread renamed' message on top. I didn't include the entire trace in my post, maybe the whole thing will help: |
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There's not much else I can think of right now. Under CrossOver 23.6, the game still isn't playable, but it boots at least so that's probably your best bet moving forward. |
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It may be a futile effort anyway. Using Crossover with DXVK, the actual game loading screen appears and seems to be working, but when it's finished loading it goes into an infinite loop that it's unable to open a raw socket due to permissions. Which is accurate since it needs root access for that. |
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I've read about people getting it running on Proton. Although that's Linux of course, it still gives me hope. |
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Getting a similar (identical even, I think) crash log as @coreyklass unfortunately. Installing Gecko did not seem to do much. |
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I also have the same issue. When I start the game from inside Steam, it tries to install the Paradox Launcher and I get the error message below. I am trying to look more into it, but wanted to share already with you. If I get more information I will update here. 
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On my installation, Steam Build ID 12645681, offset |
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Likewise with me, 0xc80e is CC. The crash trace is the below, would you mind sharing with us how you interpret where to adjust the DLL file? I thought perhaps 0xc872 but I'm not sure what to do. |
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I can do some RE on that specific version of the DLL so we can figure out what the patch is doing and how to keep it working between versions. |
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@DSteve595 @coreyklass @IsaacMarovitz just realised I made a new comment thread instead of replying to this one. |
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@janschiiii Did you manage to overcome the launcher installer issue? I'm getting the same error and no matter what I click in the dialogue box, the launcher «exits prematurely». It looks fine till these entries in the log: I was able to install |
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Apologies everyone I gave the wrong offset, it's file offset 0xbc0e. SHA1:
How to find the location yourself
This is at "Very Low" settings at 1440p with nothing in the map at all, M2 Max 64gb Ram
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No problem! |
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Works like a charm! Thanks a bunch, and kudos for finding it! |
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Thanks for the help @manolz1, I've added the instructions to the wiki, and might make a script to make patch easier. |
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Looking at this function in detail: Before: After: So it changes that comparison from |
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I’ve created a drop-in DLL that you simply have to copy into the game folder, which does the patch in memory on the fly on game start. It will also work on future versions of the game (as long as cohtml_Unity3DPlugin.dll doesn’t change too heavily). I’ll post it once it’s ready, maybe later tonight when I get time to finish it properly |
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I'm seeing a weird crash. I don't think it's related @manolz1's patch, as I also saw it before applying that. When I first create a bottle and install Steam+CS2+dotnet41, I can run the launcher and game successfully. But then, if I quit and open it up a second time, the launcher crashes. I've repeated this twice. Error details |
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I encountered this issue as well. You can try removing the |
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I tried that, and also tried removing Paradox Launcher files from AppData, and also verifying data in Steam, but I get: |
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If that occurs, download the Paradox Launcher installer from Paradox's website and try reinstalling it. It's really finicky, but keep messing around and it will eventually be satisfied. |
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In the Cities Skylines II folder there's also a Launcher folder with launcher-installer-windows_2023.11.msi in it, which you can run in your Whisky bottle. First, delete the Paradox Interactive folder (or just the launcher files inside of it), then run the launcher-installer-windows_2023.11.msi file and click "Repair" and it should fix the launcher issues (until your next boot of the game, at least). 
Same thing, but saves you the hassle of having to download the launcher installer from Paradox's website, since it's already included in the Cities Skylines II folder |
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This might be a bit of a “grey area” solution, but you can use Goldberg steam emu to bypass steam and the paradox launcher completely. |
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cohtml_unity3dplugin.dll Auto-PatcherHey Everyone, I've created an automatic patching method for cohtml_unity3dplugin.dll which should greatly simplify the process for everyone. There's no need for manual patching with this method, you only ever have to set this up once, and it will also continue to work even when the game updates. It uses a dll proxy for version.dll to auto-load itself and patch the game in memory only when the game is launched. So the dll on disk remains unchanged as well. Instructions
More detailed instructions on the repo page below if needed as well |
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@IsaacMarovitz wondering if you have some any insight for me. In my code (dllmain.cpp line 74) I'm trying to relaunch the game from itself if version_orig.dll was not copied in by the user manually (after copying the dll in the proper directory in code). The process does re-launch but crashes due to (i think) the version.dll override in wine configuration not applying properly when a process is launched that way. I think its defaulting to the wine built in code instead of the native dll. So it means you have to let the game crash once and then execute it again for it to pickup version_orig.dll. It's not a big deal since this crash would only ever happen once and only if you didn't manually copy version_orig.dll in the folder initially, but I'd like to make it as perfect as possible regardless. Do you have any suggestions on how i can re-launch the game properly there? Bearing in mind my theory on why its crashing could be totally wrong too :) |
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Although the CSII start normally but now it has a loading screen problem (the last circle doesn't load). Is it possible that ver 1.0.14 borked the fix ? EDIT: Installed Wine-Gecko and it started normally (although did the same thing in crossover and it didn't run) |
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Apologies everyone I gave the wrong offset, it's file offset 0xbc0e.
SHA1:
cohtml_Unity3DPlugin.dll = 8ed6b20e5d3b74a705f406d3f49e5c74b44b7f4f
How to find the location yourself
This is at "Very Low" settings at 1440p with nothing in the map at all, M2 Max 64gb Ram