"Walkthrough: Displaying Statement Completion" doesn't work in VS2015

Hi,

I tried all the steps in https://msdn.microsoft.com/en-us/library/ee372314%28v=vs.140%29.aspx page but it didn't work as expected. (It doesn't show the autocompletion list box, when I type in a text file, opened in the experimental version)

Then I tried after manually installing the vsix file, but it didn't work either. (It got installed successfully, but autocompletion list box never appears)

When I am building the project (when experimental instance starting), I see following exceptions are written to the "output" window.(But build is successful and experimental instance starts)

Exception thrown: 'System.Resources.MissingManifestResourceException' in mscorlib.dll

Exception thrown: 'System.ArgumentException' in Microsoft.VisualStudio.CommonIDE.dll

Exception thrown: 'System.ArgumentNullException' in mscorlib.dll
Exception thrown: 'System.InvalidOperationException' in Microsoft.VsHub.Client.dll
Exception thrown: 'System.InvalidOperationException' in mscorlib.dll

Exception thrown: 'System.IO.DirectoryNotFoundException' in mscorlib.dll

Exception thrown: 'System.IO.PathTooLongException' in mscorlib.dll

Exception thrown: 'System.IO.FileNotFoundException' in mscorlib.dll

Exception thrown: 'System.Net.WebException' in System.dll

Exception thrown: 'System.Net.WebException' in mscorlib.dll

Could you please let me know what might be going wrong in my environment?

Thanks,

Sandun