Meta Data library connection from Designer

Dear wmusers,

Good day to you. Looking for your help to resolve below Designer issue.

I am trying to connect meta data library which is already up and running in port 8090(Default) from Designer tool, its showing error “Failed ! Please check the workspace log file more details” while clicking “Test Connection” in the following.

Designer->Window-> Preferences-> webMethods–>Meta Data Library–>
Host name
Port:8090
Username: Developer (Default)
Password: develop (Default password for Meta data library)

and clicked the button “Test Connection”

When i check the log file for workspace, i could see error the following error.
[COLOR=Red]!ENTRY com.webmethods.sc.metadata.core 4 0 2010-01-06 17:10:50.187
!MESSAGE [META.API.5006] Failed to create store instance. Error ‘java.lang.reflect.InvocationTargetException’.
!STACK 0
com.webmethods.sc.metadata.api.exceptions.StoreException: [META.API.5006] Failed to create store instance. Error ‘java.lang.reflect.InvocationTargetException’. at com.webmethods.sc.metadata.api.MetaStoreDescriptor.newStore(MetaStoreDescriptor.java:106)"
[/color]

[COLOR=Black]Please advise how to resolve this connectivity issue to Meta data library from Designer.

[SIZE=2]Thanks in advance!
[/COLOR][/size]

Any clue/suggestions?