When I launch simple app from NetBeans, it goes well, but after closing such error encountered:

#
# A fatal error has been detected by the Java Runtime Environment:
#
# SIGSEGV (0xb) at pc=0x00007fab24f57c58, pid=6193, tid=140373476468480
#
# JRE version: 7.0_06-b20
# Java VM: Java HotSpot(TM) 64-Bit Server VM (23.2-b09 mixed mode linux-amd64 compressed oops)
# Problematic frame:
# C [libX11.so.6+0x33c58] XQueryExtension+0x28
#
# Failed to write core dump. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again
#
# An error report file with more information is saved as:
# /home/ulyss/NetBeansProjects/JavaFXApplication1/hs_err_pid6193.log
#
# If you would like to submit a bug report, please visit:
# http://bugreport.sun.com/bugreport/crash.jsp
#
Java Result: 134