It seems the custom controls we built for our application stopped working once we pushed our code to our client's staging environment. The site works perfectly locally through remote desktop, but once anyone hits the site from an external source, any page with a custom control throws an "Id cannot be an empty guid" error. I'm not sure what is causing this issue. Any ideas would be greatly appreciated. Thank you all very much in advance for the possible solutions.
This is very odd. Would it be possible to open a ticket and describe in detail the history of the project, the custom controls, how you deployed the site. In addition to the detailed information, you can send us a copy of the project files and a backup of the database so that we can test the reported behavior and provide a solution.
Thank you in advance for your cooperation.