Closing JMonkey(Netbeans)

Hi, I use JME3 on linux mint 17, sometimes netbeans is closing (when i add control to node, or even create a new class, …) after reestaling JME3 probleme didn’t disappear. Where I can find all log files?

My environment:
Java: 1.7.0_51; Java HotSpot™ Server VM 24.51-b03
Runtime: Java™ SE Runtime Environment 1.7.0_51-b13
System: Linux version 3.13.0-24-generic running on i386; UTF-8; en_US (jmonkeyplatform)
User directory: /home/andrei/.jmonkeyplatform/3.0
Cache directory: /home/andrei/.jmonkeyplatform/3.0/var/cache
java version “1.7.0_72”

http://wiki.jmonkeyengine.org/doku.php/sdk:troubleshooting