ugh... i'm sorry about going awol for two weeks. I was hoping 2.1.6 would work well, but apparently it doesn't (at least for some people). on top of that, autoimager disappearing also caught me by surprise.
AutoImager can be downloaded
here. The link is also on the front page.
The "Access denied" error message may be because you do not have administrative priviledges and cannot install applications or modify the windows registry. Do not run 'install' as a limited user.
Regarding Windows Vista... I have no idea how well it would work, but I've heard that the new security policies prevent the executing of scripts (PDFrasterFarian is a script) and may also be the reason you get "access denied" when the installer tries to modify the registry. I'll install Vista soon, but for now perhaps others can offer advice on how to make it work.
Anyway, I've been learning .net and I'll rewrite pdfrasterfarian to get rid of its ridiculous text-mode ui, make it compatible with Vista, and usable without an explorer right-click menu. I'll also put in some long-promised features (esp. enhancing and collating a folder of images instead of pdfs). However, regarding dejavu... i tried looking for a simple, command-line renderer (eg, djvu->png) and the only thing i found was for linux/cygwin. Also, i've tried looking for another program that can do image dilation besides AutoImager and have not been able to find anything. The algorithm is pretty simple, though, so i may be able to program it in directly (but it might be slower).