We have several VSTO projects that were created using VS2010.
Recently we installed another visual studio version VS2013 as according to Microsoft several VS versions can exists side by side in a machine.
However when we open up the old projects via VS2010 and try to build we get the following error messages.
The "FindRibbons" task could not be loaded from the assembly Microsoft.VisualStudio.Tools.Office.BuildTasks, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a. 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. MineTech.Apps.Excel2010Addin
Any help would be of great help (we would like to keep both VS2010 and VS2013 if possible)