Pentest 1

I've read all the articles, and posts. So about the admin panel. I have tried inclusions, which didn't work, nothing seems too off in source. I've tried multiple n**ins, but to no avail. I've read multiple sites explaining the action, but I still can't get past it. So my question is:

Am I at fault, or is it the challenge? Also, a hint to point me in the correct direction would be appreciated. I have other questions, but I'm assuming once/if I gain admin, it'll solve some of my issues. If I had to guess, I'd say it's my lack of basic understanding of **L in general.

Some of it is working but some of it is still broken, we have a fixed version ready to move .over soon, you should get an error message if you did the right thing, and it didnt award points though.