debugging "No Script access allowed"! weird

I would just go with CI 4 and install the Myth/Auth and Boilerplate, with these two your up and running.

Myth:Auth

Boilerplate

If you have any trouble I can help you with these I manually installed my setup.

Just moved back from 4.4 to 3.1 CI and based on what you said earlier on "You can start by remarking them out one by one and then fix the errors for it when they popup." Sounded like its more time consuming rather then just sticking with CI 3.1(I could be wrong as this is my first encounter with both PHP and CI Framework). So you opinion is that i should upgrade back to CI 4.4 and work on the remarking the projects files one by one?

cause which ever way gets me pass the AdminPanel CI framework phase It will be good enough for me.