If you get this error message, you are probably as frustrated as I was.
Every new upload to d.tube, had some new obstacles to over come.
It would be very helpful if there were more details in the error message explaining what exactly the issue was for those that don't have the capabilities of solving the issue themselves.
Here are the solutions that worked for me:
I honestly think clearing your cache is the first option and easiest since the uploads went through on fresh installs of new browsers.
I hope this solves your issues, and I would appreciate a follow and some love for this post, cause boy did I spend many hours trying to get to the bottom of this.
Comment below and let me know if it worked out for you!
Thanks