usermanagement.UserManagementException error

Hi all,

I have an web dynpro java application that requires to read an xml document stored in the km repository. I have referenced an external KM jar as a external library dc. tc/je/usermanagement/api is also referenced via development components. At design time there are no errors and build and deployment is successful.

However when launching the application in portal I am faced with the following:

java.lang.ClassNotFoundException: com.sapportals.portal.security.usermanagement.UserManagementException

I have researched but still cannot find a solution. any ideas?

Thanks in advance

Adnan