missing video generators?

Hi, so the first time I downloaded final cut express 4, there were some video generators that I always used. Under video generators, render, there were good generators like caustics, lens flare, membrane, etc... I just downloaded final cut express 4 for a second time on another computer (same disk and everything). But now, there are only 5 video generators under render. None of the ones I listed were on the list. What happened to them? Why were they on my first download, but not my second?