• MSSQL Extension Version: 1.0
• VSCode Version: 1.13.1
• OS Version: Windows 10 Enterprise

Steps to Reproduce:

1. Install mssql extension in vscode
2. Reload

SQLToolsService initialization output will say

Initializing SQL tools service for the mssql extension.
Note: mssql commands will be available after installing the service.

Platform: win32, x86_64 (Windows)

Installing SQL tools service to C:\Users\username\.vscode\extensions\ms-mssql.mssql-1.0.0\sqltoolsservice\1.0.0\Windows.
Downloading https://download.microsoft.com/download/3/A/E/3AE0DD0F-86A1-46CD-BFE2-E106E7CC8508/microsoft.sqltools.servicelayer-win-x64-netcoreapp1.0.zip
(26779 KB) .................... Done!
Installing ...
Done! 372 files unpacked.

SQLToolsService output:

Unhandled Exception: System.AggregateException: One or more errors occurred. (One or more errors occurred. (The given path's format is not supported.)) ---> System.AggregateException: One or more errors occurred. (The given path's format is not supported.) ---> System.NotSupportedException: The given path's format is not supported.
at System.IO.Path.GetFullPath(String path)
at Microsoft.SqlTools.ServiceLayer.Workspace.Workspace.ResolveFilePath(String filePath)
at Microsoft.SqlTools.ServiceLayer.Workspace.Workspace.GetFileBuffer(String filePath, String initialBuffer)
at Microsoft.SqlTools.ServiceLayer.Workspace.WorkspaceService1.<HandleDidOpenTextDocumentNotification>d__38.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.SqlTools.Hosting.Protocol.MessageDispatcher.<DispatchMessage>d__33.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.SqlTools.Hosting.Protocol.MessageDispatcher.<ListenForMessages>d__32.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.SqlTools.Utility.AsyncContext.Start(Func1 asyncMainFunc)
at System.Threading.Tasks.Task.Execute()
--- End of inner exception stack trace ---
--- 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.SqlTools.Hosting.Protocol.ProtocolEndpoint.WaitForExit()
at Microsoft.SqlTools.ServiceLayer.Program.Main(String[] args)
[Error - 3:05:37 PM] Connection to server got closed. Server will not be restarted.

After restarting mssql, the SQLToolsService output will repeat. and a popup error dialog that says "mssql: SQL Tools Service component could not start."