rockin, did you install avisynth for 64-bit Windows? I had trouble loading the AVS script too before upgrading. From what I understand, you need to install the regular avisynth first, then install the upgrade.
That being said, you can see from my posts above that I'm not exactly having the best luck myself, so take my posts for what they're worth :) I tried these just for the heck of it, but it looks like I might be better off waiting on dark_jedi's versions.