Hi Paul
As far as I have understood when upgradeing the Octopus Server it should be possible to upgrade each Tentacle also, as I have updated to latest release (.1209) I would assume I could update Tentacles through the portal interface but they are still at (.1206) version.
Tentacle and server is in my test setup hosted on the same server, I do not know if that could be the culprit or not.
/Tom