OmniSharp invalid CIL

[weinand]

From @darkoverlordofdata on October 28, 2016 20:27

• VSCode Version: 1.6.1
• OS Version: elementary OS 0.4 Loki (64-bit) - Built on "Ubuntu 16.04 LTS"

Steps to Reproduce:

1. Followed instructions at https://www.microsoft.com/net/core#ubuntu
2. Restart VSCode

Get the following output:
Starting OmniSharp server at 10/28/2016, 1:22:37 PM
Target: /home/bruce/Downloads/WindowsExplorer_C/WindowsExplorer_C.sln

OmniSharp server started wth Mono
Path: /home/bruce/Applications/omnisharp-ubuntu16-x64-netcoreapp1.0/OmniSharp
PID: 23323

Cannot open assembly '/home/bruce/Applications/omnisharp-ubuntu16-x64-netcoreapp1.0/OmniSharp': File does not contain a valid CIL image.
[ERROR] Error: Failed to start OmniSharp

Copied from original issue: microsoft/vscode#14676

[DustinCampbell]

@darkoverlordofdata: the output above seems very strange. I'm not sure why it would try to launch a .NET Core version of OmniSharp with Mono, but I'm guessing that's the problem.

Did you set "omnisharp.useMono": true in your VS Code settings? If so, that won't work with the .NET Core version of OmniSharp. That version is standalone.

[abadi45]

I'm having the same issue, is there anything I can try ?

[DustinCampbell]

Have you set the "omnisharp.path" and "omnisharp.useMono" settings?

[abadi45]

Thanks for the reply.
its working now i deleted the extension and installed the latest beta using vsix, didn't use path or use mono the extension itself installed all the dependencies.

[DustinCampbell]

Makes sense. Out of curiosity, which version of the extension did you install? Was it from the VS Code marketplace? Or, was it one of the beta releases available on this repo?

[darkoverlordofdata]

I've set useMono to false, and it loads. That seems counter-intuitive since I'm on linux, wouldn't I want to use mono? Anyway, it them can compile, but it can't run - I get a message:

Run 'Debug: Download .NET Core Debugger' in the Command Palette or open a .NET project directory to download the .NET Core Debugger

But when I do that, nothing happens. It doesn't seem like this product is ready yet....

[DustinCampbell]

It's a bit counter-intuitive, but you downloaded the standalone OmniSharp that is built for Ubuntu. That version runs natively on Ubuntu and doesn't need Mono. There is a Mono build of OmniSharp that requires Mono to run.

[DustinCampbell]

Glad both of you got it working. Note that this should be much easier in the 1.5 release, which is coming soon.

[fennecfoxsolutions]

I get something like:

[fail]: OmniSharp.MSBuild.ProjectFile.ProjectFileInfo The project 'd: \ Projects GIT \ Fennec Fox Solutions \ FoxAccount \ src \ FoxAccount.Application \ FoxAccount.Application.csproj' does not have any destination structure compatible with '.NETCoreApp, Version = v2.0 '.

[DustinCampbell]

Could you file a new issue rather than reporting on a year-old closed issue? Thanks!