Problem with projects not compiling

[Guest]

Can anyone tell me why I keep getting the following problem after shutting
down VS2008 and attempting to reopen my solution?

Warning 1 The referenced component 'System' could not be found.
Warning 2 The referenced component 'System.Core' could not be found.
Warning 3 The referenced component 'System.Xml.Linq' could not be found.
Warning 4 The referenced component 'System.Data.DataSetExtensions' could not
be found.
Warning 5 The referenced component 'System.Data' could not be found.
Warning 6 The referenced component 'System.Xml' could not be found.
Warning 7 The referenced component 'WindowsBase' could not be found.
Warning 8 The referenced component 'PresentationCore' could not be found.
Warning 9 The referenced component 'PresentationFramework' could not be
found.
Error 10 The build was aborted because of an internal failure.
Microsoft.Build.Shared.InternalErrorException: Internal MSBuild Error: We
can only call this method once
at Microsoft.Build.Shared.ErrorUtilities.ThrowInternalError(Boolean
showAssert, String unformattedMessage, Object[] args)
at Microsoft.Build.BuildEngine.Engine.EngineBuildLoop(BuildRequest
terminatingBuildRequest)
at
Microsoft.Build.BuildEngine.Engine.PostProjectEvaluationRequests(Project
project, String[] projectFiles, String[][] targetNames, BuildPropertyGroup[]
globalPropertiesPerProject, IDictionary[] targetOutputsPerProject,
BuildSettings buildFlags, String[] toolVersions) 0 1 Setup

I can't build it and have to recreate the projects ever time (create new
solution and projects and reimport all the files). *Exceedingly* annoying.

 

[Ignacio Machin ( .NET/ C# MVP )]

Can anyone tell me why I keep getting the following problem after shutting
down VS2008 and attempting to reopen my solution?

Warning 1 The referenced component 'System' could not be found.
Warning 2 The referenced component 'System.Core' could not be found.
Warning 3 The referenced component 'System.Xml.Linq' could not be found.
Warning 4 The referenced component 'System.Data.DataSetExtensions' could not
be found.
Warning 5 The referenced component 'System.Data' could not be found.
Warning 6 The referenced component 'System.Xml' could not be found.
Warning 7 The referenced component 'WindowsBase' could not be found.
Warning 8 The referenced component 'PresentationCore' could not be found.
Warning 9 The referenced component 'PresentationFramework' could not be
found.
Error 10 The build was aborted because of an internal failure.
Microsoft.Build.Shared.InternalErrorException: Internal MSBuild Error: We
can only call this method once
   at Microsoft.Build.Shared.ErrorUtilities.ThrowInternalError(Boolean
showAssert, String unformattedMessage, Object[] args)
   at Microsoft.Build.BuildEngine.Engine.EngineBuildLoop(BuildRequest
terminatingBuildRequest)
   at
Microsoft.Build.BuildEngine.Engine.PostProjectEvaluationRequests(Project
project, String[] projectFiles, String[][] targetNames, BuildPropertyGroup[]
globalPropertiesPerProject, IDictionary[] targetOutputsPerProject,
BuildSettings buildFlags, String[] toolVersions)  0 1 Setup

I can't build it and have to recreate the projects ever time (create new
solution and projects and reimport all the files). *Exceedingly* annoying.

Did you try to reinstall VS ?