Difference in Metal Film and Carbon Film
Relax. First off, the link does not necessarily point to a carbon assortment - the description does not say. What it does say is that the assortment replaces an earlier kit which did use carbon comps. 

Regardless, for what you're doing there is no difference. The composition of the resistors has nothing to do with your problem.

And what is your problem? At a guess, you're reading the color codes wrong. I recommend you get a cheap mulitmeter (you can get them for less than $10 on eBay), and use it to check your resistor values.