Program has received an update! Please re-download.
Changelog for v2.1.0
-) Proxy support added for both cookie and manual login
-) Optional proxy login settings added
-) Single score sending mode supports randomizing the score now, can enter a range (ex: 10-100)
Enjoy.
Edit: @(you need an account to see links), tested and not receiving the error you're getting... I think it might just be something with your settings/computer configuration...