Hey, so I have recently acquired a Ti Nspire CX version 4.5.0 And it sure wasn't just to make calculations and functions and whatever.
Though after figuring out how to install the application runner, Ndless, No .tns files will open no matter what I do.

I was sure I installed the right version because it was the only installer that would open on the calculator.
So I decided to try uninstalling the version I got to install a different one, but believe it or not the tns file that holds the ability to uninstall the Ndless version I am currently running would not open.

"The document format is not supported 'tns app name here'" Is the error message it gives me, every single time, with every file I try to open.
I don't know if it has to do with my version of the calculator or the files I'm trying to run, but weirdly enough I have found no similar problem on the internet so far similar to mine.

Anybody have any idea what may be occurring to make this happen?