I've been struggling with a known issue with nDoc where it tries to generate filenames that are bigger than 256 characters. So instead of generating my documentation within the build folder, which is under the project folder - I'm going to have to create a temp directory at the root of my current drive with a really short directory name and create the documentation within it. The problem I had was figuring out what my current drive was. Answer:
<echo message="${directory::get-directory-root('.')}" />
Probably an easier way, but this'll do for now.
