When we try to change the redirect URI to have the double / it still loads on the next screen showing the single / URI and asking which application on the computer should open the response.

How did you get it to accept the new URI with the double backslash?

@marco selecting the error doesn't change anything about the code editor for me.

When I try to run the app I'm working on I get an error in the Log that says "Syntax Error Expected expression but found )."

I don't see any additional information or any way to debug where this error may be occurring. Would be great to get some additional information to make it easier to track down the problem.