I have installed the latest CRM 2011 Developer toolkit (from SDK v5.0.6) & I have created a XAML Workflow Library project using the supplied templates. I then right click the solution, click add new item & select XAML Workflow Activity. A box appears asking for the activity name and the entity name, then a Visual Studio error box appears with:
Value Cannot Be Null Parameter Name: Path
There is only an OK button & when I click this the "Add New Item" dialog box reappears. In the project I see that a XAML file has been created but it is essentially empty - it just has an <Activity> line and nothing else - hardly a useful template! The xaml file seems to be missing the references to the Microsoft.XRM DLLs - these need to be defined as imports to the XAML.
Has anyone else managed to use the XAML project template?
I get the same error if I try adding a "Workflow Activity Class", though at least it does generate some code, though it doesn't add the CRM activity attributes.
I am using VS2010 SP1. I have tried this on 2 machines with the same result.