a new build error after making change by replacing version=10.0.0.0 with 11.0.0.0 in VS2010

Question

I got the same problem as Build Error + Creating VSTO addin for excel 2010

After making the change according to the solution, I got the new error:

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Answer 1

I know it's an old post, but maybe I have a solution for you... I ran into exactly the same problem and I have to tell you that the "InitializeDefaultProperties" exception is not fix-able for VS2010.

First of all: Make sure that your Visual Studio 2010 installation is not modified, anyway make a clean install just to be sure.

If you modified the C:\Program Files (x86)\MSBuild\Microsoft\VisualStudio\v10.0\OfficeTools\Microsoft.VisualStudio.Tools.Office.targets revert your changes.

If you now try to build your VSTO Project the following error should apppear:

The "FindRibbons" task could not be loaded from the assembly
Microsoft.VisualStudio.Tools.Office.BuildTasks, Version=10.0.0.0,
Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a. Could not load file or assembly 'Microsoft.VisualStudio.Tools.Office.BuildTasks,
Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The system cannot find the file specified. Confirm that the declaration is correct, that the assembly and all its dependencies are available, and that the task contains a public class that implements Microsoft.Build.Framework.ITask.

My Solution:
--> Open Visual Studio 2010 (you dont need to load a Project)
--> Go to Help an click About Microsoft Visual Studio
--> Check Version

Microsoft Visual Studio 2010 Version
10.0.40219.1 SP1Rel
Microsoft .NET Framework
Version 4.5.51209 SP1Rel

If it says RTMRel download the Microsoft Visual Studio 2010 SP1 from here: http://go.microsoft.com/fwlink/?LinkId=210710

It includes the necessary VSTO and VSTO 4.0 Runtime.

If thats not the Problem, I'm sorry...