The given path's format is not supported

[jmbeach]

When trying to run Omnisharp:

Omnisharp.exe -p 2000 -s "D:\Path\to\my\soluntion.sln"

I get the error:

{"Event":"log","Body":{"LogLevel":"INFORMATION","Name":"OmniSharp.MSBuild.ProjectSystem","Message":"Detecting projects in 'D:\\Path\\to\\my\\solution.sln'."},"Seq":10,"Type":"event"}
{"Event":"log","Body":{"LogLevel":"ERROR","Name":"OmniSharp.Stdio.Host","Message":"The project system 'OmniSharp.MSBuild.ProjectSystem' threw exception during initialization.\r\nSystem.NotSupportedException: The given path's format is not supported.\r\n   at System.Security.Permissions.FileIOPermission.EmulateFileIOPermissionChecks(String fullPath)\r\n   at System.Security.Permissions.FileIOPermission.QuickDemand(FileIOPermissionAccess access, String fullPath, Boolean checkForDuplicates, Boolean needFullPath)\r\n   at OmniSharp.MSBuild.ProjectSystem.GetProjectPathsFromSolution(String solutionFilePath)\r\n   at OmniSharp.MSBuild.ProjectSystem.Initalize(IConfiguration configuration)\r\n   at OmniSharp.WorkspaceInitializer.Initialize(IServiceProvider serviceProvider, CompositionHost compositionHost, IConfiguration configuration, ILogger logger)"},"Seq":11,"Type":"event"}

Not sure what's wrong here.

[jmbeach]

I did realize I was using the stdin executable instead of http like I meant to, but same issue with http.

fail: OmniSharp.Http.Startup[0]
      The project system 'OmniSharp.MSBuild.ProjectSystem' threw exception during initialization.
System.NotSupportedException: The given path's format is not supported.
   at System.Security.Permissions.FileIOPermission.EmulateFileIOPermissionChecks(String fullPath)
   at System.Security.Permissions.FileIOPermission.QuickDemand(FileIOPermissionAccess access, String fullPath, Boolean checkForDuplicates, Boolean needFullPath)
   at OmniSharp.MSBuild.ProjectSystem.GetProjectPathsFromSolution(String solutionFilePath)
   at OmniSharp.MSBuild.ProjectSystem.Initalize(IConfiguration configuration)
   at OmniSharp.WorkspaceInitializer.Initialize(IServiceProvider serviceProvider, CompositionHost compositionHost, IConfiguration configuration, ILogger logger)

[filipw]

what is the path here - I am asking because I think you redacted it out?
You'd get exception like this if you use invalid path i.e. with : or | in the path, so perhaps yours is invalid?

[jmbeach]

I didn't post the path because it has a customer name in it, but it is in the form "D:\Path\to\my\project.sln". There are no special characters in it unless the ":" in "D:" could cause it. Do I need to have unix paths somehow?

[jmbeach]

info: OmniSharp.Http.Startup[0]
      Starting OmniSharp on Windows 6.2.9200.0 (x64)
info: OmniSharp.Cake.CakeProjectSystem[0]
      Detecting Cake files in 'D:\Code\Customers\redacted'.
info: OmniSharp.Cake.CakeProjectSystem[0]
      Could not find any Cake files
info: OmniSharp.DotNet.DotNetProjectSystem[0]
      Initializing in D:\Code\Customers\redacted
info: OmniSharp.DotNet.DotNetProjectSystem[0]
      Auto package restore: False
info: OmniSharp.DotNet.DotNetProjectSystem[0]
      Update workspace context
info: OmniSharp.DotNet.DotNetProjectSystem[0]
      Resolving projects references
info: OmniSharp.MSBuild.ProjectSystem[0]
      Detecting projects in 'D:\Code\Customers\redacted'.
fail: OmniSharp.Http.Startup[0]
      The project system 'OmniSharp.MSBuild.ProjectSystem' threw exception during initialization.
System.NotSupportedException: The given path's format is not supported.
   at System.Security.Permissions.FileIOPermission.EmulateFileIOPermissionChecks(String fullPath)
   at System.Security.Permissions.FileIOPermission.QuickDemand(FileIOPermissionAccess access, String fullPath, Boolean checkForDuplicates, Boolean needFullPath)
   at OmniSharp.MSBuild.ProjectSystem.GetProjectPathsFromSolution(String solutionFilePath)
   at OmniSharp.MSBuild.ProjectSystem.Initalize(IConfiguration configuration)
   at OmniSharp.WorkspaceInitializer.Initialize(IServiceProvider serviceProvider, CompositionHost compositionHost, IConfiguration configuration, ILogger logger)
info: OmniSharp.Script.ScriptProjectSystem[0]
      Detecting CSX files in 'D:\Code\Customers\redacted'.
info: OmniSharp.Script.ScriptProjectSystem[0]
      Could not find any CSX files
info: OmniSharp.Http.Startup[0]
      Invoking Workspace Options Provider: OmniSharp.Roslyn.CSharp.Services.CSharpWorkspaceOptionsProvider
info: OmniSharp.Http.Startup[0]
      Configuration finished.
info: OmniSharp.Http.Startup[0]
      Omnisharp server running on port '2000' at location 'D:\Code\Customers\redacted' on host -1.
System.AggregateException: One or more errors occurred. ---> System.BadImageFormatException: An attempt was made to load a program with an incorrect format. (Exception from HRESULT: 0x8007000B)
   at Microsoft.AspNetCore.Server.Kestrel.Internal.Networking.Libuv.NativeMethods.uv_loop_size()
   at Microsoft.AspNetCore.Server.Kestrel.Internal.Networking.UvLoopHandle.Init(Libuv uv)
   at Microsoft.AspNetCore.Server.Kestrel.Internal.KestrelThread.ThreadStart(Object parameter)
   --- End of inner exception stack trace ---
   at System.Threading.Tasks.Task.ThrowIfExceptional(Boolean includeTaskCanceledExceptions)
   at System.Threading.Tasks.Task.Wait(Int32 millisecondsTimeout, CancellationToken cancellationToken)
   at Microsoft.AspNetCore.Server.Kestrel.Internal.KestrelEngine.Start(Int32 count)
   at Microsoft.AspNetCore.Server.Kestrel.KestrelServer.Start[TContext](IHttpApplication`1 application)
   at Microsoft.AspNetCore.Hosting.Internal.WebHost.Start()
   at OmniSharp.Http.Host.Start()
   at OmniSharp.Http.Program.<>c__DisplayClass0_0.<Main>b__1()
   at Microsoft.Extensions.CommandLineUtils.CommandLineApplication.Execute(String[] args)
   at OmniSharp.HostHelpers.Start(Func`1 action)
---> (Inner Exception #0) System.BadImageFormatException: An attempt was made to load a program with an incorrect format. (Exception from HRESULT: 0x8007000B)
   at Microsoft.AspNetCore.Server.Kestrel.Internal.Networking.Libuv.NativeMethods.uv_loop_size()
   at Microsoft.AspNetCore.Server.Kestrel.Internal.Networking.UvLoopHandle.Init(Libuv uv)
   at Microsoft.AspNetCore.Server.Kestrel.Internal.KestrelThread.ThreadStart(Object parameter)<---

Press any key to continue . . .

Full output (note there's another issue with libuv, but I think I know what that's about)

[nickspoons]

@jmbeach If you have a theory about that libuv issue I'd love to hear it, I'm currently struggling with exactly that, after building the latest master. I'm on a 64bit Windows machine so my exe is at ...artifacts\publish\OmniSharp.Http\win7-x64\OmniSharp.exe, and I think it's trying to use a 32 bit libuv for some reason.

Does that sound like what you're experiencing, or is this a different issue?

[jmbeach]

@nickspoons I got that solved. I had x86 libuv in my PATH environment variable, but I needed x64

Snippet of my PATH:

[jmbeach]

I guess omnisharp-roslyn defaults to building for x64

[nickspoons]

Ah OK thanks. I don't have it in my path, so I'm not quite sure where omnisharp is getting it from. Thanks anyway.

[jmbeach]

Found the issue. One of the projects in my solution is an ASP.NET website. When OmniSharp runs the method GetProjectPathsFromSolution in OmniSharp.MsBuild.ProjectSystem.cs, it sees the website's RelativePath as http://localhost:55237.

[filipw]

This was fixed by #1066 and #1084