Minecraft Forums

So I was making my adventure map in creative when i decided to switch to my desktop from my laptop. So I brought the map over via my USB key and put them in the save file. everything was going well until I got near my redstone. I would place a block, and it would transmute it into sandstone (I use a redstone ready world) And when i broke and replaced my redstone, it would appear without power, although the signal would continue. Also I couldnt fly or even walk into some areas, glitching me back to where i was a second ago. It then crashed ( i didnt copy that error) so I closed and re-opened in offline and the map wouldnt start and gave me this error:




Minecraft has crashed!
----------------------

Minecraft has stopped running because it encountered a problem; Exception in server tick loop

A full error report has been saved to C:\Users\FAMILY\AppData\Roaming\.minecraft\crash-reports\crash-2013-01-18_20.45.19-server.txt - Please include a copy of that file (Not this screen!) if you report this crash to anyone; without it, they will not be able to help fix the crash



--- BEGIN ERROR REPORT 3dedb259 --------
Full report at:
C:\Users\FAMILY\AppData\Roaming\.minecraft\crash-reports\crash-2013-01-18_20.45.19-server.txt
Please show that file to Mojang, NOT just this screen!

Generated 18/01/13 8:45 PM

-- System Details --
Details:
Minecraft Version: 1.4.7
Operating System: Windows 7 (amd64) version 6.1
Java Version: 1.6.0_27, Sun Microsystems Inc.
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Sun Microsystems Inc.
Memory: 257297368 bytes (245 MB) / 611188736 bytes (582 MB) up to 954466304 bytes (910 MB)
JVM Flags: 2 total; -Xms512m -Xmx1024m
AABB Pool Size: 85954 (4813424 bytes; 4 MB) allocated, 85954 (4813424 bytes; 4 MB) used
Suspicious classes: No suspicious classes found.
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
Profiler Position: N/A (disabled)
Vec3 Pool Size: 8976 (502656 bytes; 0 MB) allocated, 8976 (502656 bytes; 0 MB) used
Player Count: 0 / 8; []
Type: Integrated Server (map_client.txt)
Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.

java.lang.NullPointerException
at cf.b(SourceFile:103)
at cf.a(SourceFile:35)
at iv.b(SourceFile:436)
at gm.a(SourceFile:72)
at bec.b(SourceFile:73)
at net.minecraft.server.MinecraftServer.r(SourceFile:762)
at net.minecraft.server.MinecraftServer.q(SourceFile:679)
at bdz.q(SourceFile:117)
at net.minecraft.server.MinecraftServer.run(SourceFile:613)
at fy.run(SourceFile:849)
--- END ERROR REPORT 46dc818b ----------







Famous last words: Everything was going fine until I got near my redstone.