To download any older version of the mod (this includes 1.6.4), click or copy and paste the links below (into your URL bar).
GGGlasses164-1.6.4 - http://www.mediafire.com/download/97sxlv8bgbortv8/GGGlasses164-1.6.4.jar
(Please note that, due to stained glass being introduced in 1.7.2, the crafting recipes are different in this version. You may have to download NEI or some other mod that allows you to see the crafting recipes.)
GGGlasses-1.7.2-1.0 - http://www.mediafire.com/download/11l9543wadv5kmq/GGGlasses-1.7.2-1.0.jar
GGGlasses Developers Cut - http://33kingkiller-hub.dx.am/gggdevcut.html
GGGlassesMC-1.7.2-1.1 - http://www.mediafire.com/download/3e58igwgzbyw98c/GGGlassesMC-1.7.2-1.1.zip