On startup of dm-kernel 2.0.0M5 i am getting following exception

Code:
Exception in thread "main" java.lang.IllegalStateException: Unable to locate unique FrameworkFactory. Found 2 factories. Do you have mu
ltiple OSGi implementations on your classpath?
        at com.springsource.osgi.launcher.FrameworkFactoryLocator.uniqueServiceFromLoader(FrameworkFactoryLocator.java:53)
        at com.springsource.osgi.launcher.FrameworkFactoryLocator.createFrameworkFactory(FrameworkFactoryLocator.java:44)
        at com.springsource.osgi.launcher.FrameworkBuilder.start(FrameworkBuilder.java:153)
        at com.springsource.osgi.launcher.Launcher.main(Launcher.java:58)