[LAU] can't open ardour2 projects created on jack1 with jack2

Hi I discovered that jack2 seems to run much better with renoise on my arch laptop than jack(1). However I can't seem to open the ardour projects I worked on with jack with jack2 installed. ardour2 simply hangs with the following in a terminal (and qjackctl and jack are hanging, I can't even kill jackd): ack: JackGraphManager::RecalculateLatency port_index = 25 Jack: JackGraphManager::RecalculateLatency port_index = 26 Jack: JackGraphManager::RecalculateLatency port_index = 27 Jack: JackGraphManager::RecalculateLatency port_index = 28 Jack: JackGraphManager::RecalculateLatency port_index = 30 Jack: JackGraphManager::RecalculateLatency port_index = 31 Jack: JackGraphManager::RecalculateLatency port_index = 33 Jack: JackGraphManager::RecalculateLatency port_index = 34 Jack: JackGraphManager::RecalculateLatency port_index = 35 Jack: JackGraphManager::RecalculateLatency port_index = 37 Jack: JackGraphManager::RecalculateLatency port_index = 38 Jack: JackClient::PortRegister ref = 4 name = ardour:send 6/out 1 type = 32 bit float mono audio port_index = 39 Jack: JackClient::PortDisconnect src = 39 Jack: JackClient::ClientNotify ref = 4 name = ardour notify = 4 Jack: JackClient::kGraphOrderCallback Jack: JackClient::ClientNotify ref = 4 name = ardour notify = 18 Jack: JackGraphManager::RecalculateLatency port_index = 23 Jack: JackGraphManager::RecalculateLatency port_index = 24 Jack: JackGraphManager::RecalculateLatency port_index = 29 Jack: JackGraphManager::RecalculateLatency port_index = 32 Jack: JackGraphManager::RecalculateLatency port_index = 36 NB: I can start ardour2 just fine with a new project... I know there are many unknowns, but I'll be happy to supply any requested sysinfo.... Thanks in advance for any input! -- Atte http://atte.dk http://modlys.dk