[YouTube-API] Problems with AuthSub on secured registered domain

Hi,

I am using the .NET Data API.

I have developed and successfully tested an AuthSub web application on a local web server sitting in my office. However, when I got to release the same site into production it doesn't work.

I have a Google for Business account and have registered ownership of the domain at https://accounts.google.com/ManageDomains

The problem arises when a user tries to link authorise my website with their account. They receive the error:

"The page you have requested cannot be displayed. Another site was requesting access to your Google Account, but sent a malformed request. Please contact the site that you were trying to use when you received this message to inform them of the error."

I have no idea why this is happening as I am forming the AuthSub request url correctly.

The production site is running over SSL too.

Any help is appreciated!

Thanks!

--
You received this message because you are subscribed to the Google Groups "YouTube APIs Developer Forum" group.
To view this discussion on the web visit https://groups.google.com/d/msg/youtube-api-gdata/-/AdPv3Wey4-4J.
To post to this group, send email to youtube-api-gdata@googlegroups.com.
To unsubscribe from this group, send email to youtube-api-gdata+unsubscribe@googlegroups.com.
For more options, visit this group at http://groups.google.com/group/youtube-api-gdata?hl=en.