All I know is a followed instructions online here:
Everything was working perfectly, ran Onyx, webDAV started to hang and freeze my OS.
Notebooks has nothing to do with this. I cannot access my webDAV files any more from my computer. if I could read and write to my webDAV from my computer, I would not have a problem syncing with notebooks as everything was working perfectly before.
Your statement: The only reason you would have to "mount" a WebDAV share is if it were on a different serve outside your laptop." conflicts with this statement from Notebooks from your link:
"A WebDAV server basically is a web server that can be MOUNTED on your computer just like a folder or drive."
I think you are mistaken, and this is not helping at all. I am not asking for help syncing to Notebooks, I need to fix my broken webDAV server on my laptop. If you are not able to do so, please just let me know.