Failed to install RTC Client (Express version)

HELP!
Here is the log :

<xml>
<xml>
<log>
<entry>
<logger>com.ibm.cic.common.logging.LogManager.LogProperties</logger>
<class>com.ibm.cic.common.core.internal.ComIbmCicCommonCorePlugin</class>
<method>createTracer</method>
<message>
<key>No log properties file found in: {0}</key>
<arg>/tmp/ciclogs_root</arg>
</message>
</entry>
<entry>
<logger>com.ibm.cic.common.logging.LogManager</logger>
<class>com.ibm.cic.common.core.internal.ComIbmCicCommonCorePlugin</class>
<method>createTracer</method>
<message>
<key>Initial log file: {0}</key>
<arg>/tmp/ciclogs_root/20090302_1010.xml</arg>
</message>
</entry>
<entry>
<logger>com.ibm.cic.common.downloads.CredentialStore</logger>
<method><clinit></method>
<message>Store does not exist. Creating a new store... </message>
</entry>
<entry>
<logger>com.ibm.cic.agent.internal.ui.AgentUI</logger>
<method>getAgent</method>
<message>
<key>OS: {0} ({1}bit) Windowing System: {2}</key>
<arg>linux</arg>
<arg>32</arg>
<arg>gtk 2.14.4</arg>
</message>
</entry>
<entry>
<logger>com.ibm.cic.common.logging.LogManager.LogProperties</logger>
<class>com.ibm.cic.agent.core.Agent</class>
<method>setLogDirectory</method>
<message>
<key>No log properties file found in: {0}</key>
<arg>/tmp/ciclogs_root</arg>
</message>
</entry>
<entry>
<logger>com.ibm.cic.common.logging.FileLog</logger>
<class>com.ibm.cic.agent.core.Agent</class>
<method>setLogDirectory</method>
<message>
<key>Log File: {0}</key>
<arg>/var/ibm/InstallationManager/logs/20090302_1010.xml</arg>
</message>
</entry>
<entry>
<logger>com.ibm.cic.common.logging.LogManager.LogProperties</logger>
<class>com.ibm.cic.agent.core.Agent</class>
<method>setLogDirectory</method>
<message>
<key>No log properties file found in: {0}</key>
<arg>/var/ibm/InstallationManager/logs</arg>
</message>
</entry>
<entry>
<logger>com.ibm.cic.agent.core.Agent</logger>
<method>start</method>
<message>Starting installation manager. </message>
</entry>
<entry>
<logger>com.ibm.cic.agent.core.Agent</logger>
<method>restoreState</method>
<message>Restoring installation manager state. </message>
</entry>
<entry>
<logger>com.ibm.cic.agent.core.Agent</logger>
<method>restoreState</method>
<message>Running Installation Manager version 1.2.0 (internal version 1.2.0.20080918_1021) </message>
</entry>
<entry>
<logger>com.ibm.cic.common.logging.LogManager</logger>
<class>org.eclipse.ui.internal.WorkbenchPartReference.1</class>
<method>widgetDisposed</method>
<message>Widget disposed too early!
java.lang.RuntimeException: Widget disposed too early! </message>
<exception>
java.lang.RuntimeException: Widget disposed too early!
<stack>org.eclipse.ui.internal.WorkbenchPartReference$1.widgetDisposed(WorkbenchPartReference.java:169)</stack>
<stack>org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:116)</stack>
<stack>org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66)</stack>
<stack>org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1101)</stack>
<stack>org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1125)</stack>
<stack>org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1106)</stack>
<stack>org.eclipse.swt.widgets.Widget.release(Widget.java:970)</stack>
<stack>org.eclipse.swt.widgets.Control.release(Control.java:2984)</stack>
<stack>org.eclipse.swt.widgets.Composite.releaseChildren(Composite.java:1098)</stack>
<stack>org.eclipse.swt.widgets.Widget.release(Widget.java:973)</stack>
<stack>org.eclipse.swt.widgets.Control.release(Control.java:2984)</stack>
<stack>org.eclipse.swt.widgets.Composite.releaseChildren(Composite.java:1098)</stack>
<stack>org.eclipse.swt.widgets.Widget.release(Widget.java:973)</stack>
<stack>org.eclipse.swt.widgets.Control.release(Control.java:2984)</stack>
<stack>org.eclipse.swt.widgets.Composite.releaseChildren(Composite.java:1098)</stack>
<stack>org.eclipse.swt.widgets.Canvas.releaseChildren(Canvas.java:162)</stack>
<stack>org.eclipse.swt.widgets.Decorations.releaseChildren(Decorations.java:465)</stack>
<stack>org.eclipse.swt.widgets.Shell.releaseChildren(Shell.java:1704)</stack>
<stack>org.eclipse.swt.widgets.Widget.release(Widget.java:973)</stack>
<stack>org.eclipse.swt.widgets.Control.release(Control.java:2984)</stack>
<stack>org.eclipse.swt.widgets.Widget.dispose(Widget.java:434)</stack>
<stack>org.eclipse.swt.widgets.Shell.dispose(Shell.java:1649)</stack>
<stack>org.eclipse.swt.widgets.Display.release(Display.java:3019)</stack>
<stack>org.eclipse.swt.graphics.Device.dispose(Device.java:237)</stack>
<stack>com.ibm.cic.agent.internal.ui.AgentUIApplication.launch(AgentUIApplication.java:217)</stack>
<stack>com.ibm.cic.agent.internal.ui.AgentUIApplication.run(AgentUIApplication.java:80)</stack>
<stack>sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)</stack>
<stack>sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64)</stack>
<stack>sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)</stack>
<stack>java.lang.reflect.Method.invoke(Method.java:615)</stack>
<stack>org.eclipse.equinox.internal.app.EclipseAppContainer.callMethod(EclipseAppContainer.java:533)</stack>
<stack>org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:155)</stack>
<stack>org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:106)</stack>
<stack>org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:76)</stack>
<stack>org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:363)</stack>
<stack>org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:176)</stack>
<stack>sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)</stack>
<stack>sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64)</stack>
<stack>sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)</stack>
<stack>java.lang.reflect.Method.invoke(Method.java:615)</stack>
<stack>org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:549)</stack>
<stack>org.eclipse.equinox.launcher.Main.basicRun(Main.java:504)</stack>
<stack>org.eclipse.equinox.launcher.Main.run(Main.java:1236)</stack>
<stack>org.eclipse.equinox.launcher.Main.main(Main.java:1212)</stack>
</exception>
</entry>
</log>

Thanks.