Yesterday I switched from VS12 to VS2013 Ultimate, opened my app in VS2013 and deployed it. Worked as expected. However I have one Workflow Issue, when I go to the XAML and drag an item from the toolbox to the flow (no matter which item), I get an red error bar, saying "Could not generate view for CopyItem". It also gives me an error message:
Then when I close en reopen the project and workflow designer, the view is generated but when I click on it the following error message appears:
How can I solve this?
Edit: it appears to have something to do with this particular project. When I create a new project and add a workflow I have no issues...