Error building VS2005 solution from VisualBuild after upgrading to v9.1

[SLyse]

After upgrading Visual Fortran from v8 to v9.1 I get error building my VS2005 solution from Visual Build. I can build my solution without problems from VisualBuild.

Below you can see a part of the log from VisualBuild.

Please give some advice how to solve the problem.

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Target ValidateSolutionConfiguration:
Building solution configuration 'Release|Win32'.
Target Build:
Target ArrayCalcFortLib:
C:TrunkApplicationsInnovationComponentsBKArrayCalcLibBKArrayCalcLib.sln : warning MSB4078: The project file 'ArrayCalcFortLibArrayCalcFortLib.vfproj' is not supported by MSBuild and cannot be built.
Done building target 'ArrayCalcFortLib' in project 'BKArrayCalcLib.sln'.

[Steven_L_Intel1]

I think the following from the release notes is relevant:

Building Visual Studio Projects from the Command Line

If you have a Visual Studio-created Intel Fortran project or solution and wish to initiate a build from the command line or a batch file, use devenv.exe, the Visual Studio launcher. Type devenv /? for available command line options. The Microsoft tools MSBuild and Team Build cannot currently be used to build Intel Fortran projects.

Given that Intel Fortran 8 didn't support VS2005, I am having difficulty understanding what you were doing before.

[SLyse]

Sorry for not being clear on this - we also migrated the solution from VS2003 to VS2005, but did not change anything in VisualBuild.

I will look into the release note when I am back in the office tomorrow.