Ok. it sounds like some of you guys are having problems uninstalling 1964 and re-installing it
granted, the uninstallers might be a little too complicated, so here's how to manually do it.
go to start->run...
go to this location in the picture, right click, and delete. not hard eh? ;]
There might be other 1964 keys in there as well from previous versions, please delete them as well.
You might also want to delete any other entries such as Aziaudio, Nrage, N64emulation, jabosoft, and other n64-related entry keys as well.
then just download 1964+patch and your set.