I went on a world and noticed that some of the glowstones were showing up as missing texture blocks (the black and pink blocks). This also happened with some grass and sand.
Attachments
Comments 4
Please have the block selected in the F3 screenshot, as I am trying to see if there is something strange about the block. Also, please force a crash by pressing F3 + C for 10 seconds while in-game and attach the crash report ([minecraft|http://hopper.minecraft.net/help/finding-minecraft-data-folder]/crash-reports/crash-<DATE>-client.txt) here.
Please attach a screenshot of the F3 screen when the block is highlighted.