OS: Windows 7 (ver 6.1, arch amd64)
Java: 1.7.0_45 (by Oracle Corporation)
Launcher: Minecraft Launcher 1.4.4 (bootstrap 5)
Minecraft: 14w25b (updated Thu Jun 19 08:29:48 EDT 2014)
The game crashes when I go to a certain place on an old world that I've had since beta 1.6. It only happens when I load it on 14w25a or b and any older versions load up fine. The crash report is in the attachment.
MC-57470 Crash loading world containing blocks with removed data values: java.lang.IllegalArgumentException: Cannot set property