Error starting up the client class net.i2p.jircii.GuiTest
     java.lang.reflect.InvocationTargetException
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
     at java.lang.reflect.Method.invoke(Method.java:616)
     at net.i2p.router.startup.LoadClientAppsJob$RunApp.run(LoadClientAppsJob.java:238)
     at java.lang.Thread.run(Thread.java:679)
     at net.i2p.util.I2PThread.run(I2PThread.java:85)
     Caused by: java.lang.RuntimeException: Cannot run the graphical application. I2P must be running on a graphical display, and it must be running as the logged-in user and not as a daemon.
     at net.i2p.jircii.GuiTest.main(GuiTest.java:32)

AND ANOTHER ONE

PM ERROR [I2PSendQueue] i2p.bote.network.I2PSendQueue : Can't send packet.
     java.net.NoRouteToHostException: Connection reset
     at net.i2p.client.streaming.I2PSocketManagerFull.connect(I2PSocketManagerFull.java:229)
     at net.i2p.client.streaming.I2PSocketManagerFull.connect(I2PSocketManagerFull.java:248)
     at i2p.bote.network.I2PSendQueue.sendStream(I2PSendQueue.java:284)
     at i2p.bote.network.I2PSendQueue.send(I2PSendQueue.java:254)
     at i2p.bote.network.I2PSendQueue.doStep(I2PSendQueue.java:207)
     at i2p.bote.service.I2PBoteThread.run(I2PBoteThread.java:77)