We have not heard such reports; we have tested again on multiple PCs, and we could not duplicate the problem. The problem seems to be quite strange. Let me confirm with you:
(1) You can logon from DriveHQ FileManager; (2) You can upload and download files using FileManager; (3) When you try to publish, it reports the error. Could you please email us the screenshots of the problem?
Please try to download the latest version FileManager from DriveHQ.com website. Let us know if it solves your problem. If not, my guess is you have some anti-virus software / security software blocked "publishing".