http://blogs.msdn.com/vsto2/archive/2007/03/04/how-to-convert-a-sharepoint-workflow-project-to-a-visual-studio-tools-for-office-sharepoint-workflow-project.aspxYou do not need to start a brand new project from scratch in order to take advantage of Visual Studio Tools for Office (VSTO) enhancements to SharePoint workflow development. If you have already created a SharePoint workflow project by using templatesen-USCommunityServer 2.1 SP1 (Build: 61025.2)http://blogs.msdn.com/vsto2/archive/2007/03/04/how-to-convert-a-sharepoint-workflow-project-to-a-visual-studio-tools-for-office-sharepoint-workflow-project.aspx#1808818Mon, 05 Mar 2007 13:55:34 GMT91d46819-8472-40ad-a661-2c78acb4018c:1808818haupt<p>When doing &quot;Add a GUID to the Project File That Represents a VSTO Project Type, step 6&quot; I get &quot;The project file ... cannot be opened. The projectd type is not supported by this installation.&quot;</p> <p>I have installed VSTO, VSTO2 and Sharepoint 2007 SDK.</p> http://blogs.msdn.com/vsto2/archive/2007/03/04/how-to-convert-a-sharepoint-workflow-project-to-a-visual-studio-tools-for-office-sharepoint-workflow-project.aspx#1831213Thu, 08 Mar 2007 01:47:05 GMT91d46819-8472-40ad-a661-2c78acb4018c:1831213VSTO Team<p>Sorry for the frustration. Perhaps I can help.</p> <p>Are you using a Community Technology Preview (CTP) version of VSTO that contains VSTO SharePoint workflow project templates?</p> <p>Thank you.</p> http://blogs.msdn.com/vsto2/archive/2007/03/04/how-to-convert-a-sharepoint-workflow-project-to-a-visual-studio-tools-for-office-sharepoint-workflow-project.aspx#1843751Fri, 09 Mar 2007 15:27:09 GMT91d46819-8472-40ad-a661-2c78acb4018c:1843751haupt<p>Hmm. I didnt have VSTO installed afterall, and cannot install it as it requires Office 2003. </p> <p>The Sharepoint templates are from &quot;SharePoint Server 2007 SDK: Software Development Kit and Enterprise Content Management Starter Kit&quot; (RTM version)</p>