This content seems outdated

We are constantly updating the video and pdf materials on PE Review. It is very possible that you’re looking at an outdated version of the video and problem, due to your computer’s cache.

This is your computer’s temporary storage area where frequently accessed data is stored for quick access.  Your computer has effectively made a copy of the pereview site contents, at some time in the past.  So, it’s going to content that has been replaced, upgraded, or corrected.

All you need to do is empty your cache, and you’ll be accessing the very latest information.  If you’re not sure how to empty your cache, go to:’s-Cache