Quote - ....Anybody out there ever encounter a similiar error? 

I don't have Vista but, Poser seems to have an extremely short list of "Error Descriptions."  So, when it runs out of memory it picks whatever is convenient.  Since textures are being loaded and that's probably where it ran out (textures take up a big slice of memory) it decided to grace you with an error blaming its lack of resources on the texture..  Wasn't that nice? :)

Most likely, that's all that happened - Poser ran out of resources and couldn't finish the render.  This will also result in textures getting "dropped" in your preview pane as well as Poser scrambles for resources and dumps stuff willy-nilly.

At least, that's my take on it.

Save your file (use an alt name just in case) and shut down Poser.  Terminate any background processes you may have and, if possible, clear out any cache files that might have been left open.  Restart Poser, clear the cache (again, just in case it didn't get a chance to) and re-open your file.  Try to free up as much available RAM as possible and, if you're running a bit low on Hard Drive space, try to clear some up by uninstalling unnecessary programs and data.  Processing one render can take gajillibillions of megs... or something like that.. as Poser crunches info and stores it in temporary caches.

(Note - You don't have to restart your computer, necessarily, if you have utilities that can clear up orphaned cache files (temp files.)  BUT, a restart will usually guarantee that space gets freed up and any little weird glitches caused by Poser encountering "render-interuptus" won't be around to interfere.)