Quick way to make perfect perspective grids.

A good understanding is definitely best, I would never make an argument for using these techniques INSTEAD of learning perspective, but it's a nice trick even for people who do understand it. Once you know how it works and how to do it manually, there's no need to set it up every time like that if there are faster ways. 

If you're using Photoshop CS6 or CC, make sure you're putting it in the 64-bit Photoshop folder for the panels, if that's the version you're using. If it's still not working, make sure you're copying everything in the zip directly into the folder. There should be a folder and some various files, don't put them into another folder to consolidate them, just drop them in as is. Also double check you're putting the panels version into proper folder and not accidentally installing the scripts version.