Just a hunch here. Are you able to change the name from Robo Help to RoboHelp or maybe Robo_Help? My thought is that perhaps the space is causing an issue. So I'd suggest changing the folder name to remove the space in both the folder as well as RoboHelp's settings, then try again.
Helpful and Handy Links
Don't know about your problem, bu I just added our sharepoint site as a network drive to my computer and publish to SharePoint using the network drive.
Thank you for your response and suggestion. Every time that I try to add a network drive to the location, I'm unable to successfully save my credentials. Oddly enough, I can create a link to it through network places. I can't do anything with that link after I have created it though.
Thank you for your response and your suggestion. I have tried creating a new document library at that same site without spaces in the name and I am still getting access denied.