Sublime 3 and Omnisharp (installed from pkg manager) v1.9.6
"System.NotSupportedException: Specified method is not supported.
at Mono.Cecil.PE.ImageReader.ReadArchitecture()
at Mono.Cecil.PE.ImageReader.ReadImage()
at Mono.Cecil.PE.ImageReader.ReadImageFrom(Stream stream)
at Mono.Cecil.ModuleDefinition.ReadModule(Stream stream, ReaderParameters parameters)
at Mono.Cecil.ModuleDefinition.ReadModule(String fileName, ReaderParameters parameters)
at ICSharpCode.NRefactory.TypeSystem.CecilLoader.LoadAssemblyFile(String fileName)
at OmniSharp.Solution.Project.<LoadAssembly>m__0(String file)
at System.Collections.Concurrent.ConcurrentDictionary`2.GetOrAdd(TKey key, Func`2 valueFactory)
at OmniSharp.Solution.Project.LoadAssembly(String assemblyFileName)
at OmniSharp.Solution.Project.AddReference(String reference)
at OmniSharp.Solution.CSharpProject..ctor(ISolution solution, Logger logger, String folderPath, IFileSystem fileSystem)
at OmniSharp.Solution.CSharpFolder.LoadSolution()
at OmniSharp.Program
.StartServer(String solutionPath, String clientPathMode, Int32 port, Verbosity verbosity, String configLocation, Int32 hostPID)
at OmniSharp.Program.Main(String[] args)"
Sublime 3 and Omnisharp (installed from pkg manager) v1.9.6