Hi all i don't know if you are still looking for solution but it think this can be helpful for resolving issue
Lotus Software Knowledge Base Document
Title: When federation fails during a Sametime Meetings V9 Cell/PN installation, in addition to Meetings registration status, Meetings recordings and conversions functionality will be affected and will not work fully.
Doc #: 1650068
URL:
http://www.ibm.com/support/docview.wss?uid=swg21650068