I'm following this guide to set up a small environment for source control and automated builds - mostly for learning what it is and how it works, but also for using in those of my hobby projects that I believe will actually be useful some day.

However, at the step where he commits and builds, I fail to get a success status in the TeamCity history log. I keep getting the error described in the stack trace below. I have verified with Windows Explorer that the solution file it can't find is actually there, so I really don't know what to do. How do I fix/troubleshoot this?

[15:16:06]: Checking for changes
[15:16:08]: Clearing temporary directory: C:\Program Files\JetBrains\BuildAgent\temp\buildTmp
[15:16:08]: Checkout directory: C:\Program Files\JetBrains\BuildAgent\work\72d50012f70c4588
[15:16:08]: Updating sources: server side checkout...
[15:16:08]: [Updating sources: server side checkout...] Building incremental patch for VCS root: DemoProjects
[15:16:09]: [Updating sources: server side checkout...] Repository sources transferred
[15:16:09]: [Updating sources: server side checkout...] Updating C:\Program Files\JetBrains\BuildAgent\work\72d50012f70c4588
[15:16:10]: Start process: "c:\Program Files\JetBrains\BuildAgent\bin\..\plugins\dotnetPlugin\bin\JetBrains.BuildServer.MsBuildBootstrap.exe" "/workdir:C:\Program Files\JetBrains\BuildAgent\work\72d50012f70c4588" /msbuildPath:C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
[15:16:10]: in: C:\Program Files\JetBrains\BuildAgent\work\72d50012f70c4588
[15:16:11]: TeamCity MSBuild bootstrap v5.1 Copyright (C) JetBrains s.r.o.
[15:16:11]: Application failed with internal error:
[15:16:11]: Failed to find project file at path: C:\Program Files\JetBrains\BuildAgent\work\72d50012f70c4588\Nehemia\trunk\Nehemiah.sln
[15:16:11]: System.Exception: Failed to find project file at path: C:\Program Files\JetBrains\BuildAgent\work\72d50012f70c4588\Nehemia\trunk\Nehemiah.sln
[15:16:11]: at JetBrains.BuildServer.MSBuildBootstrap.Impl.MSBuildBootstrapFactory.Create(IClientRunArgs args) in c:\Agent\work\6223f0c8b1d45aaa\src\MSBuildBootstrap.Core\src\Impl\MSBuildBootstrapFactory.cs:line 25
[15:16:11]: at JetBrains.BuildServer.MSBuildBootstrap.Program.Run(String[] _args) in c:\Agent\work\6223f0c8b1d45aaa\src\MSBuildBootstrap\src\Program.cs:line 66
[15:16:11]: Process exited with code -11
[15:16:11]: Build finished