Hi Jason,
You should not make changes to mojoPortal code, if you fork it you own your fork and there is nothing I can do to support your forked version nor do I want to use my time supporting it.
The best way to work with mojoPortal source code is to work from svn trunk so you can get my updates without having to wait for releases, you just do svn update, rebuild the solution and visit the setup page. All customization should be in external projects of your own.
You can possibly get the latest version from svn trunk and backport the code changes from the Web/ConfirmRegistration.aspx.cs, but if you have "customized" mojoportal code you are on the wrong path. Please don't ever report any bugs about your custom version unless you verify the same bug exists in the official version.
Best,
Joe