The are two quick fixes in the current version.
The first is the quick fix that was in the original blog post.. when an class is defined in the class file and the yellow light bulb is displayed to create the class in a new file in a referenced project. The other quick fix is a red light buld which shows up when you create a statment to define and instantiate a class or interface that does not yet exist. That second feature will"is supposed to" create a folder structure that maps the namespace taken from the test class. This is a feature that I have been fighting the resharper api, it will create the files but does not properly recongize the new project folders. It breezed past the link you sent me and assumed that the error you recieved was part of that feature. It sounds like you are using the first quick fix.
Can you send me a screen shot of your solution explorer? I can recreate the folder structure that you were using to determine why the create folder method is blowing up.
ps. I just created a google group if you are interested in joining that. I have another person who has contributed some additional functionality and I would like to formalize the support a little bit, via a group. You can join the group here. http://groups.google.com/group/tdd-productivity-plugin
Thanks,
Eric
I got a fix to that use case. Thanks so much for sending it in. I think the current version is stable.