Iron golem crash

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

Minecraft has stopped running because it encountered a problem; Exception while adding particle
A full error report has been saved to C:\Documents and Settings\Administrator\Application Data\.minecraft\crash-reports\crash-2012-11-03_11.33.29-client.txt for your convenience. 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 d2531c3b --------
Full report at:
C:\Documents and Settings\Administrator\Application Data\.minecraft\crash-reports\crash-2012-11-03_11.33.29-client.txt

java.lang.NumberFormatException: For input string: ""
at java.lang.NumberFormatException.forInputString(Unknown Source)
at java.lang.Integer.parseInt(Unknown Source)
at java.lang.Integer.parseInt(Unknown Source)
at bad.b(SourceFile:1475)
at bad.a(SourceFile:1364)
at xv.a(SourceFile:809)
at pi.c(SourceFile:107)
at mc.j_(SourceFile:524)
at xv.a(SourceFile:1315)
at xv.g(SourceFile:1294)
at xv.h(SourceFile:1194)
at net.minecraft.client.Minecraft.l(SourceFile:1283)
at net.minecraft.client.Minecraft.J(SourceFile:582)
at net.minecraft.client.Minecraft.run(SourceFile:534)
at java.lang.Thread.run(Unknown Source)
— END ERROR REPORT 88167050 ----------