I have just released a minor update to plOpenGL that includes the Code::Blocks Project Files for creating a 64bit plOpenGL.dll on Windows.

I have also released a pack on SWI-Prolog.org that includes a fixed 64bit version of the plOpenGL.dll.

Prolog has now been made into an swi-prolog package. It can be either be downloaded either from the downloads page, or from the SWI-Prolog Package Page.