I have moved all the textures from the RezLoaded texture pack into my texture pack folder, but cant seem to get it to load in game. Is there a problem with the file or do I need to do anything specific?

This is a file problem. This texture pack requires the download of MC patcher. Either that or the texture pack is infected. You can still use your minecraft account on another computer if you want to use another one.

This is probably a problem with your little file