IDE 1.6.4 Issues in Ubuntu 15.04

Dear all,

IDE 1.6.4 hangs up when "Open..." is chosen from the menu.
The error in the terminal is

A fatal error has been detected by the Java Runtime Environment:

SIGSEGV (0xb) at pc=0x00007ff6ec68fec7, pid=4096, tid=140697432893184

JRE version: OpenJDK Runtime Environment (7.0_79-b14) (build 1.7.0_79-b14)

Java VM: OpenJDK 64-Bit Server VM (24.79-b02 mixed mode linux-amd64 compressed oops)

Derivative: IcedTea 2.5.5

Distribution: Ubuntu Vivid Vervet (development branch), package 7u79-2.5.5-0ubuntu1

Problematic frame:

C [libjavagtk.so+0x8ec7]

Full log attached.

I found a solution to this by editing the launcher script like explained here
http://forum.arduino.cc/index.php?topic=320517.0

hs_err_pid4096.txt (114 KB)