404 on Formgrader when course directory on a separate file system then nbgrader

[rdpratti]

Installation : Windows standalone install (no JupyterHub).
Anaconda install on C:\Aanaconda3

Jupyter Config Notebook Directory: c.NotebookApp.notebook_dir = 'F:\Jupyter\Notebooks'
nbgrader Config Course Directory : c.CourseDirectory.root = 'F:\Jupyter\Notebooks\courses\CSC343'

jupyter brings up notebook directory without issue.
clicking on formgrader produces a 404 (attached)

There is an error message on the server screen that I have attached.

When I changed both config files to C:, the problem goes away and formgrader comes up fine.

I apologize if this is a config problem on my part, but I can't find anything in the doc that jumps out at me (base_url?).
nbgrader_server_emsg.txt

rd

[jhamrick]

I think this will likely be fixed by #866 but I will double check.

[jhamrick]

Yep, #866 seems to fix it! 😄