Jruby not working ClassNotFoundException

Question

I am using rvm , ruby-1.9.3-p547 and jruby-1.7.13. It was working fine but suddenly something happen I don't know what. Then after if I run any rails command i.e. bundle install , I got this:

java.lang.ClassNotFoundException: rubygems.defaults.OperatingSystemService
    at java.net.URLClassLoader$1.run(URLClassLoader.java:217)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
    at org.jruby.util.JRubyClassLoader.findClass(JRubyClassLoader.java:128)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:321)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:266)

I using Linux.

Thanks in advance