Hello! Is anybody there?

Try deleting the "Public" folder in your game directory then verify on steam. It says many files/objects are missing, so that may fix it. It could also be an Authorization fix, where the game doesn't have permission to look at its own files.

CaptainCobbs wrote:

Try deleting the "Public" folder in your game directory then verify on steam. It says many files/objects are missing, so that may fix it. It could also be an Authorization fix, where the game doesn't have permission to look at its own files.

Thanks, I will try it.

CaptainCobbs wrote:

Try deleting the "Public" folder in your game directory then verify on steam. It says many files/objects are missing, so that may fix it. It could also be an Authorization fix, where the game doesn't have permission to look at its own files.

I did it all. Still crashing. 

Well, the curious thing, that verification on freshly installed game has found about 200 inappropriate  files. The new installation was clear - I deleted all ES2 folders in steam and user directories before this installation. What a mess...

As well, afrer installation I removed "read only" attribute. 

All the same, a look from the developer needed.

bump. in hope that developers still alive...

The error is, as usual:

System.TypeInitializationException: An exception was thrown by the type initializer for Mono.CSharp.CSharpCodeCompiler ---> System.IO.FileNotFoundException: Windows mono path not found: C:\Program Files (x86)\Steam\steamapps\mono\mono\mini\mono.exe  at Mono.CSharp.CSharpCodeCompiler..cctor () [0x00000] in <filename unknown>:0 

This comes up a lot these days. It pretty much means Unity is unhappy, but that could be for a lot of reasons.

Updating to the latest version of Windows 10 has fixed it.

You can also try set "-force-opengl" in the Steam launch options. To do so, right click the game in Steam, go to properies, then click on "Set Launch Options...". That has fixed it.

If you are missing Mono you can also try installing it then copying the Mono folder to steamapps. You can find the installer for Mono here. I haven't actually seen this fix or the ones below work. The real problem is not that you are missing Mono, it looks for something in Microsoft .NET and when it can't find that it resorts to looking for Mono.

This could be caused by not having Microsoft .NET Framework 4.5.2. You can download it here.

You can try installing C++ Redistributables (vcredist). It can be found here: x86 (32 bit OS) x64 (64 bit OS)

You can also try going to the "C:/Program Files (x86)/Steam/steamapps/common/Endless Space 2/EndlessSpace2_Data/" Folder and deleting the mono folder then verify the games files with steam. It should redownload the folder correctly.

The devs have commented there is a known issue with Unity and non-English characters, they said: Some people using non-english OS and international characters in their steam path could not launch the game. Such characters are badly handled by the low level layer of Unity, Mono. We have performed a workaround in the code, (better than having to reinstall Steam to a path without accents)  waiting for a cleaner solution from Unity.
I have seen others propose a fix to this that involves deleting fonts which are corrupted. Are you using a non-English computer?

Eulogos wrote:
You can try installing mono both ways and see if either works. Updating Windows and set -force-opengl are the main fixes which have worked so far.

Thanks again! Will try then.