After installation of vCenter 5.5 Update 3b, SRM 5.5 no longer functions. The vmware-dr logs show several SSL Exceptions "error: class Vmacore::Ssl::SSLException(SSL Exception: error:140000DB:SSL routines:SSL routines:short read)".
The VMware product interoperability matrixes for SRM have never shown any of the a/b/c/d/etc releases of vCenter, so I don't know if this is supposed to be working or not.