SSL a private key not found

Hi,

I got the following erro messgae when I start soapui from windows command tool: (I wrapped two company client's certificates with keytool), then in Globel Preference/SSL setting, give the keystore, and password.

2011-02-28 16:43:14,384 ERROR [errorlog]
java.security.KeyStoreException: No private keys found in keystore!
at org.apache.commons.ssl.KeyStoreBuilder.validate(KeyStoreBuilder.java:269)
at org.apache.commons.ssl.KeyStoreBuilder.build(KeyStoreBuilder.java:129)
at org.apache.commons.ssl.KeyMaterial.<init>(KeyMaterial.java:179)
at org.apache.commons.ssl.KeyMaterial.<init>(KeyMaterial.java:170)
at org.apache.commons.ssl.KeyMaterial.<init>(KeyMaterial.java:160)
at org.apache.commons.ssl.KeyMaterial.<init>(KeyMaterial.java:64)
at org.apache.commons.ssl.KeyMaterial.<init>(KeyMaterial.java:114)
at org.apache.commons.ssl.KeyMaterial.<init>(KeyMaterial.java:89)
at com.eviware.soapui.impl.wsdl.support.http.HttpClientSupport$Helper.initKeyMaterial(HttpClientSupport.java:133)
at com.eviware.soapui.impl.wsdl.support.http.HttpClientSupport$Helper.initSSL(HttpClientSupport.java:90)
at com.eviware.soapui.impl.wsdl.support.http.HttpClientSupport$Helper.<init>(HttpClientSupport.java:66)
at com.eviware.soapui.impl.wsdl.support.http.HttpClientSupport.<clinit>(HttpClientSupport.java:48)
at com.eviware.soapui.DefaultSoapUICore.initSettings(DefaultSoapUICore.java:342)
at com.eviware.soapui.SwingSoapUICore.initSettings(SwingSoapUICore.java:105)
at com.eviware.soapui.DefaultSoapUICore.init(DefaultSoapUICore.java:134)
at com.eviware.soapui.StandaloneSoapUICore.<init>(StandaloneSoapUICore.java:37)
at com.eviware.soapui.SoapUI$SoapUIRunner.run(SoapUI.java:624)
at com.eviware.soapui.SoapUI.main(SoapUI.java:720)