ClassCastException exception while Configuring the EJB adapt

I have crated one allise settings for EJB adapter. i am using weblogic server 7.0 as my EJB server and integration server 4.6.
i entered settings attributes as follows:

Initial Context Factory: weblogic.jndi.WLInitialContextFactory
Provider URL:
t3://172.16.4.6:7001
Security Credentials: password some ****
Security Principal: username for weblogic server …mypass

While testing the allise settings i am getting the following error in pop up window:

error initializing kernel

and in the integration server console

the following error

2002-04-20 15:26:05,398 [B2B HTTP Handler 127.0.0.1] INFO - [BASEJBA.5000.0008]AliasTestImpl.test - ready to getConnection()
2002-04-20 15:26:05,959 [B2B HTTP Handler 127.0.0.1] DEBUG - [BASEJBA.5000.0005]MyConnection.open - enter, isOpen? false

java.lang.ClassCastException: iaik.asn1.structures.Name
at sun.security.pkcs.PKCS7.getCertificate(PKCS7.java:578)
at sun.security.pkcs.SignerInfo.getCertificate(SignerInfo.java:207)
at sun.security.pkcs.SignerInfo.verify(SignerInfo.java:333)
at sun.security.pkcs.PKCS7.verify(PKCS7.java:472)
at sun.security.pkcs.PKCS7.verify(PKCS7.java:489)
at sun.security.util.SignatureFileVerifier.process(SignatureFileVerifier.java:152)
at java.util.jar.JarVerifier.processEntry(JarVerifier.java:285)
at java.util.jar.JarVerifier.update(JarVerifier.java:198)
at java.util.jar.JarFile.initializeVerifier(JarFile.java:248)
at java.util.jar.JarFile.getInputStream(JarFile.java:308)
at sun.net.www.protocol.jar.JarURLConnection.getInputStream(JarURLConnection.java:131)
at java.net.URL.openStream(URL.java:816)
at weblogic.common.internal.VersionInfo.getLocalWLPackages(VersionInfo.java:169)
at weblogic.common.internal.VersionInfo.(VersionInfo.java:34)
at weblogic.common.internal.VersionInfo.initialize(VersionInfo.java:79)
at weblogic.kernel.Kernel.initialize(Kernel.java:127)
at weblogic.kernel.Kernel.ensureInitialized(Kernel.java:104)
at weblogic.jndi.WLInitialContextFactoryDelegate.(WLInitialContextFactoryDelegate.java:176)
at java.lang.Class.newInstance0(Native Method)
at java.lang.Class.newInstance(Class.java(Compiled Code))
at weblogic.jndi.WLInitialContextFactory.getInitialContext(WLInitialContextFactory.java:147)
at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:669)
at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:247)
at javax.naming.InitialContext.init(InitialContext.java:223)
at javax.naming.InitialContext.(InitialContext.java:199)
at com.wm.pkg.ejb.MyConnection.open(Unknown Source)
at wm.ejb.MyIM.getConnection(Unknown Source)
at com.wm.pkg.ejb.MyConnection.getOpenConnection(Unknown Source)
at com.wm.pkg.ejb.AliasTestImpl.test(Unknown Source)
at com.wm.pkg.imdk.alias.AliasTester.test(Unknown Source)
at wm.imdk.runtime.IMRuntimeManager.testAlias(Unknown Source)
at java.lang.reflect.Method.invoke(Native Method)
at com.wm.app.b2b.server.JavaService.baseInvoke(JavaService.java:288)
at com.wm.app.b2b.server.ServiceManager.invoke(ServiceManager.java:688)
at com.wm.app.b2b.server.ServiceManager.invoke(ServiceManager.java:480)
at com.wm.app.b2b.server.ns.Namespace.invoke(Namespace.java:452)
at com.wm.util.template.Reporter.invoke(Reporter.java:867)
at com.wm.util.template.InvokeToken.eval(InvokeToken.java:70)
at com.wm.util.template.TemplateToken.evalChild(TemplateToken.java(Compiled Code))
at com.wm.util.template.SwitchToken.evalChild(SwitchToken.java:94)
at com.wm.util.template.TemplateToken.eval(TemplateToken.java(Compiled Code))
at com.wm.util.template.SwitchToken.eval(SwitchToken.java:58)
at com.wm.util.template.IfVarToken.evalChild(IfVarToken.java(Compiled Code))
at com.wm.util.template.IfVarToken.evalChild(IfVarToken.java(Compiled Code))
at com.wm.util.template.TemplateToken.eval(TemplateToken.java(Compiled Code))
at com.wm.util.template.IfVarToken.eval(IfVarToken.java:172)
at com.wm.util.template.TemplateToken.evalChild(TemplateToken.java(Compiled Code))
at com.wm.util.template.TemplateToken.eval(TemplateToken.java(Compiled Code))
at com.wm.util.template.Reporter.reportNoReset(Reporter.java:1167)
at com.wm.util.template.Reporter.reportToOutput(Reporter.java:1142)
at com.wm.util.template.Reporter.reportIData(Reporter.java:1031)
at com.wm.app.b2b.server.HTTPDocHandler._process(HTTPDocHandler.java:477)
at com.wm.app.b2b.server.HTTPDocHandler.process(HTTPDocHandler.java:109)
at com.wm.app.b2b.server.HTTPDispatch.run(HTTPDispatch.java:468)
at com.wm.util.pool.PooledThread.run(PooledThread.java:103)
at java.lang.Thread.run(Thread.java:498)

can any one help me out?
am i missing anything?

thanks in advance,
kishore

At one time I got the ClassCastException error when the adapter config would introspect the EI adapters (jdbc, logger, utility).