Hi,

 

Running Blackboard 8 and with Java 1.6 on PC’s, when running virtual classroom we get an error :

 

‘Application failed to run’. Click details for more info.

 

Have tried to clear the java and internet cache. Also clearing the security digital signature but when running the browser again there is no initial message to confirm digital signature. Any ideas? Thanks in advance.

 

Najib.

 

P.S. Clicking details we get :

 

load: class blackboard.plugins.virtualclassroom.ui.LwChat.class not found.

java.lang.ClassNotFoundException: blackboard.plugins.virtualclassroom.ui.LwChat.class

                at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source)

                at java.lang.ClassLoader.loadClass(Unknown Source)

                at java.lang.ClassLoader.loadClass(Unknown Source)

                at sun.plugin2.applet.Plugin2ClassLoader.loadCode(Unknown Source)

                at sun.plugin2.applet.Plugin2Manager.createApplet(Unknown Source)

                at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)

                at java.lang.Thread.run(Unknown Source)

Caused by: java.net.ConnectException: Connection refused: connect

                at java.net.PlainSocketImpl.socketConnect(Native Method)

                at java.net.PlainSocketImpl.doConnect(Unknown Source)

                at java.net.PlainSocketImpl.connectToAddress(Unknown Source)

                at java.net.PlainSocketImpl.connect(Unknown Source)

                at java.net.SocksSocketImpl.connect(Unknown Source)

                at java.net.Socket.connect(Unknown Source)

                at sun.net.NetworkClient.doConnect(Unknown Source)

                at sun.net.www.http.HttpClient.openServer(Unknown Source)

                at sun.net.www.http.HttpClient.openServer(Unknown Source)

                at sun.net.www.http.HttpClient.<init>(Unknown Source)

                at sun.net.www.http.HttpClient.New(Unknown Source)

                at sun.net.www.http.HttpClient.New(Unknown Source)

                at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(Unknown Source)

                at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Source)

                at sun.net.www.protocol.http.HttpURLConnection.connect(Unknown Source)

                at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)

                at java.net.HttpURLConnection.getResponseCode(Unknown Source)

                at sun.plugin2.applet.Applet2ClassLoader.getBytes(Unknown Source)

                at sun.plugin2.applet.Applet2ClassLoader.access$000(Unknown Source)

                at sun.plugin2.applet.Applet2ClassLoader$1.run(Unknown Source)

                at java.security.AccessController.doPrivileged(Native Method)

                ... 7 more

Exception: java.lang.ClassNotFoundException: blackboard.plugins.virtualclassroom.ui.LwChat.class

load: class blackboard.plugins.virtualclassroom.ui.Titlebar.class not found.

java.lang.ClassNotFoundException: blackboard.plugins.virtualclassroom.ui.Titlebar.class

                at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source)

                at java.lang.ClassLoader.loadClass(Unknown Source)

                at java.lang.ClassLoader.loadClass(Unknown Source)

                at sun.plugin2.applet.Plugin2ClassLoader.loadCode(Unknown Source)

                at sun.plugin2.applet.Plugin2Manager.createApplet(Unknown Source)

                at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)

                at java.lang.Thread.run(Unknown Source)

Caused by: java.net.ConnectException: Connection refused: connect

                at java.net.PlainSocketImpl.socketConnect(Native Method)

                at java.net.PlainSocketImpl.doConnect(Unknown Source)

                at java.net.PlainSocketImpl.connectToAddress(Unknown Source)

                at java.net.PlainSocketImpl.connect(Unknown Source)

                at java.net.SocksSocketImpl.connect(Unknown Source)

                at java.net.Socket.connect(Unknown Source)

                at sun.net.NetworkClient.doConnect(Unknown Source)

                at sun.net.www.http.HttpClient.openServer(Unknown Source)

                at sun.net.www.http.HttpClient.openServer(Unknown Source)

                at sun.net.www.http.HttpClient.<init>(Unknown Source)

                at sun.net.www.http.HttpClient.New(Unknown Source)

                at sun.net.www.http.HttpClient.New(Unknown Source)

                at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(Unknown Source)

                at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Source)

                at sun.net.www.protocol.http.HttpURLConnection.connect(Unknown Source)

                at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)

                at java.net.HttpURLConnection.getResponseCode(Unknown Source)

                at sun.plugin2.applet.Applet2ClassLoader.getBytes(Unknown Source)

                at sun.plugin2.applet.Applet2ClassLoader.access$000(Unknown Source)

                at sun.plugin2.applet.Applet2ClassLoader$1.run(Unknown Source)

                at java.security.AccessController.doPrivileged(Native Method)

                ... 7 more

Exception: java.lang.ClassNotFoundException: blackboard.plugins.virtualclassroom.ui.Titlebar.class

load: class blackboard.plugins.virtualclassroom.ui.Tools.class not found.

java.lang.ClassNotFoundException: blackboard.plugins.virtualclassroom.ui.Tools.class

                at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source)

                at java.lang.ClassLoader.loadClass(Unknown Source)

                at java.lang.ClassLoader.loadClass(Unknown Source)

                at sun.plugin2.applet.Plugin2ClassLoader.loadCode(Unknown Source)

                at sun.plugin2.applet.Plugin2Manager.createApplet(Unknown Source)

                at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)

                at java.lang.Thread.run(Unknown Source)

Caused by: java.net.ConnectException: Connection refused: connect

                at java.net.PlainSocketImpl.socketConnect(Native Method)

                at java.net.PlainSocketImpl.doConnect(Unknown Source)

                at java.net.PlainSocketImpl.connectToAddress(Unknown Source)

                at java.net.PlainSocketImpl.connect(Unknown Source)

                at java.net.SocksSocketImpl.connect(Unknown Source)

                at java.net.Socket.connect(Unknown Source)

                at sun.net.NetworkClient.doConnect(Unknown Source)

                at sun.net.www.http.HttpClient.openServer(Unknown Source)

                at sun.net.www.http.HttpClient.openServer(Unknown Source)

                at sun.net.www.http.HttpClient.<init>(Unknown Source)

                at sun.net.www.http.HttpClient.New(Unknown Source)

                at sun.net.www.http.HttpClient.New(Unknown Source)

                at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(Unknown Source)

                at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Source)

                at sun.net.www.protocol.http.HttpURLConnection.connect(Unknown Source)

                at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)

                at java.net.HttpURLConnection.getResponseCode(Unknown Source)

                at sun.plugin2.applet.Applet2ClassLoader.getBytes(Unknown Source)

                at sun.plugin2.applet.Applet2ClassLoader.access$000(Unknown Source)

                at sun.plugin2.applet.Applet2ClassLoader$1.run(Unknown Source)

                at java.security.AccessController.doPrivileged(Native Method)

                ... 7 more

Exception: java.lang.ClassNotFoundException: blackboard.plugins.virtualclassroom.ui.Tools.class