i have the same Error with "invalid SharePoint URL" Version 18.104.22.1682.
Can you sent me the new dll for fixed.
We want test the Office365 Backup Version with Public Folder for our Customers (between 10x 10-65Users).
When comes the Final Release for Version. 1.5 with Public Folder.
THx for your Help
Klaus Hagen / it service Liepert
May the strength be with you