log in as an admin user
click on "Manager permissions" link
under "Portlet Publishing" click on "Select Portlet Type"
in the table, click one of the "Delete" links in the "Delete" column
get error (Exception root cause message: NotSerializableException: org.jasig.portal.permission.target.PortletTypeTargetProviderImpl)
I found two existing Jiras ( and ) for this same issue. One indicates that the issue was fixed, however I was not able to find any code committed that addresses the issue.