They are quite old. Turns out there were many changes made to the SE Core libraries that will render some features broken in a few of the Tweakbench plugins.. so far I've decided to just leave them as they are, as it seems most people have no issues with them.
Bah, my bad, I must've installed them differently in FL Studio 9. They all work! Somehow before I never put them in the VstPlugins folder. The instruments and effects both work. Thanks for the reply though, and wonderful plugins, thank you!
I've actually been having a problem with pipo and FL 10. Pipo keeps crashing in one of my projects in the first few seconds, crashing FL with it. Is there a fix for it?
I've never had a problem with any of the others though.