[Exist-open] Can't list collections

[Roy W. <gar...@ya...>]

When trying to list collections in the Java admin client, Oxygen and the Collection Browser I am seeing this error:
org.xmldb.api.base.XMLDBException: Failed to invoke method describeResource in class org.exist.xmlrpc.RpcConnection: Unknown ACE Access TypeFailed to invoke method describeResource in class org.exist.xmlrpc.RpcConnection: Unknown ACE Access Type

I can list collections in eXide and over webdav.
Any ideas?
Thanks,Roy