I recently started working on workflow development in Microsoft Office SharePoint Server 2007. But when I created a new SharePoint sequential workflow project and tried to open the workflow designer in Visual Studio 2005, I immediately got the following error “'GetSelectedContextProperty' in type 'Microsoft.Workflow.VSDesigner.ExtendedUIService' from assembly 'Microsoft.Workflow.VSDesigner , Version=18.104.22.168, Culture=neutral,...' does not have an implementation.”
Apparently this was because the installed version Visual Studio 2005 Extensions for Workflow Foundation did not match with the version used in the Microsoft® Visual Studio® project templates for workflow in Microsoft Office SharePoint® Server 2007 (Beta 2 version) from the ECM Starter Kit.
If you want to use the ECM Starter Kit – install the Visual Studio 2005 Extensions for Workflow Foundation 2.2 . If you install version 2, you get the error mentioned above.If you need to check which version you have installed go to Add/Remove Programs - Select Workflow Extensions, Click on Support information - the version number should be 3.0.3807.7