APPLICATION ERROR #200 A required parameter to this page (confirm_hash) was not found.
Following is a sample Email that I get upon new user registration.
I figured out that the problem is there's an additional "amp;" in the link, and when I remove it and pastes in the browser and hit enter, it works.
According to the following bug it's supposed to be fixed, but it's not.
https://mantisbt.org/bugs/view.php?id=10369
I'm attaching my string_api.php file here as well.