I've installed the latest release of NCrunch for Visual Studio 2013, and cannot run any unit tests due to NCrunch failing to find MSBuild.
This is the call stack for the exception shown:
System.Exception: Unable to find a usable version of MSBuild on this machine.
at nCrunch.Core.BuildManagement.MSBuildEngineRegistry.GetBuildableProjectForVisualStudioVersion(VisualStudioVersion vsVersion)
at nCrunch.Core.BuildManagement.BuildProcessLauncher.AnalyseComponentBuildInExternalProcess(FilePath projectFilePath, BuildXml buildXml, String useBuildConfiguration, String useBuildPlatform, DirectoryPath solutionDir, String solutionName, List`1 importExpressionsToEvaluate, ProcessorArchitecture processorArchitecture, VisualStudioVersion vsVersion, IList`1 customEnvironmentVariables)
at nCrunch.Client.ComponentLoader.SnapshotComponentFactory.(ProcessorArchitecture )
at nCrunch.Client.ComponentLoader.SnapshotComponentFactory.CreateSnapshotComponentFromXml(FilePath projectFilePath, BuildXml projectXml, FilePath solutionFilePath, String[] additionalFilesToIncludeAtSolutionLevel, Boolean isLoadedFromFile, ISnapshotConfig snapshotConfig, VisualStudioVersion vsVersion)