I was playing around with the /setblock command in Minecraft 13w42a and I was creating signs that had symbols you can't normally type (I copied & pasted them in chat) without doing alt codes. Here's the command I used in Minecraft 13w42a:
/setblock ~0 ~1 ~0 minecraft:wall_sign 4 replace {Text2:"ℤ℮ℛℴ’ϟ Skull",Text3:"100 Points"}I noticed that Minecraft 13w42b came out with 0.02% less bugs including changes to do with more text support for signs. When I downloaded that & played my world, the game just crashes. I would post the crash log but it thinks the game is modded for some reason.
Environment
Minecraft Version: 13w42b
Operating System: Windows 7 (amd64) version 6.1
Java Version: 1.7.0_25, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 76439400 bytes (72 MB) / 275447808 bytes (262 MB) up to 954466304 bytes (910 MB)
JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G
AABB Pool Size: 7955 (445480 bytes; 0 MB) allocated, 39 (2184 bytes; 0 MB) used
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
Launched Version: 13w42b
LWJGL: 2.9.0
OpenGL: AMD Radeon(TM) HD 6480G GL version 4.1.11156 Compatibility Profile Context, ATI Technologies Inc.
Is Modded: Probably not. Jar signature remains and client brand is untouched.
Type: Client (map_client.txt)
Resource Packs: [Zero's Resource Pack]
Current Language: English (UK)
Profiler Position: N/A (disabled)
Vec3 Pool Size: 274 (15344 bytes; 0 MB) allocated, 54 (3024 bytes; 0 MB) used
Anisotropic Filtering: On (16)
Even if the launcher says your game is modded (that's MCL-1517) you can always attach
minecraft/crash-reports/crash-<DATE>-client.txt