Thank you so much, Tara!
Turns out, there was a simpler problem making my install script error.
Logged on to chat with the NameCheap customer service and they could tell right away that it was a permissions error afterall and fixed it for me on the spot.
Apparently there is a cron job that I can use on my own as well to weed these offending permissions out.
So, yay, I am finally able to move on to the configuration phase of installation!
Thanks again!