Fail starting RSA DM Default Display Thread

Hi all,
I am getting the following error when starting the server:

INFO: Deploying web application archive /opt/IBM/JazzTeamServer/server/tomcat/webapps/rsadm.war
Starting RSA DM Default Display Thread
Exception in thread "RSA DM Default Display Thread" org.eclipse.swt.SWTError: No more handles [gtk_init_check() failed]
        at org.eclipse.swt.SWT.error(SWT.java:4387)
        at org.eclipse.swt.widgets.Display.createDisplay(Display.java:914)
        at org.eclipse.swt.widgets.Display.create(Display.java:900)
        at org.eclipse.swt.graphics.Device.<init>(Device.java:156)
        at org.eclipse.swt.widgets.Display.<init>(Display.java:498)
        at org.eclipse.swt.widgets.Display.<init>(Display.java:489)
        at org.eclipse.swt.widgets.Display.getDefault(Display.java:1634)
        at com.ibm.xtools.rmps.renderingapp.displaythread.Activator.uiThread(Activator.java:113)
        at com.ibm.xtools.rmps.renderingapp.displaythread.Activator$1.run(Activator.java:163)

The start-up process stops here.

OS: CentOS 6.5
Product: CLM 5.0 M1

Does anybody can help me?