Opening Gantt Chart in Webdynpro throws Class not Found Exception

Hi ,

I have encountered problem in opening Gantt chart in Webdynpro. Currently I am using JRE 1.7 version in my laptop and I am able to open the Gantt chart, but problem is other colleagues are facing the Error while opening Gantt.

Error is "Class not Found Exception "

  Error Descripton in  Java Console  is as follows

cache: Initialize resource manager: com.sun.deploy.cache.ResourceProviderImpl@da34f5

basic: Added progress listener: sun.plugin.util.ProgressMonitorAdapter@3a1e23

security: Expected Main URL: null

1. java.lang.ClassNotFoundException: com.sap.tc.webdynpro.ace.AcfApplet

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

at sun.plugin2.applet.Plugin2ClassLoader.loadClass0(Unknown Source)

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

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

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

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

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

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

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

basic: load: class com.sap.tc.webdynpro.ace.AcfApplet not found.

1. java.lang.ClassNotFoundException: com.sap.tc.webdynpro.ace.AcfApplet

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

at sun.plugin2.applet.Plugin2ClassLoader.loadClass0(Unknown Source)

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

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

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

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

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

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

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

basic: Removed progress listener: sun.plugin.util.ProgressMonitorAdapter@3a1e23

security: Reset deny session certificate store

Error should be unique to all users since server is same for all users that is what i feel. Browser security settings for Java in Control panel has restored to default with mine and all users.

Could any one help me regarding this ?