Rosegarden Crashes

[sjewins]

After I open Rosegarden everything is fine. I import a midi file and it appears on the Rosegarden tracks. After a second or so it crashes. Running it from a terminal window this is what it shows after crashing:

Profiler : id = RosegardenDocument::checkSequencerTimer - elapsed = 0ms CPU, 0.000001000R real
[Composition] getTrackById( 0 ): WARNING: Track ID not found.
[Composition] Available track ids are:
port deleted: rosegarden:midi/playback_4
[AlsaDriver] addDevice( 0 , 0 )
[AlsaDriver] createMidiDevice(): CREATED OUTPUT PORT 3 : "out 1 - unnamed" for device 0
[AlsaDriver] renameDevice(): Renamed 129 : 3 to "General MIDI Device"
[AlsaDriver] addDevice( 0 , 1 )
[AlsaDriver] setRecordDevice(): device 1 , action true
[AlsaDriver] renameDevice(): WARNING: Cannot find device 1 in port map
port created: rosegarden:midi/playback_4
[SegmentParameterBox] update()
JackEngine::XRun: client = rosegarden was not finished, state = Triggered
JackAudioDriver::ProcessGraphAsyncMaster: Process error
JackEngine::XRun: client = rosegarden was not finished, state = Triggered
JackAudioDriver::ProcessGraphAsyncMaster: Process error
JackEngine::XRun: client = rosegarden was not finished, state = Triggered
JackAudioDriver::ProcessGraphAsyncMaster: Process error
JackEngine::XRun: client = rosegarden was not finished, state = Triggered
JackAudioDriver::ProcessGraphAsyncMaster: Process error
JackEngine::XRun: client = rosegarden was not finished, state = Triggered
JackAudioDriver::ProcessGraphAsyncMaster: Process error
JackEngine::XRun: client = rosegarden was not finished, state = Triggered
JackAudioDriver::ProcessGraphAsyncMaster: Process error
JackEngine::XRun: client = rosegarden was not finished, state = Triggered
JackAudioDriver::ProcessGraphAsyncMaster: Process error
JackEngine::XRun: client = rosegarden was not finished, state = Triggered
JackAudioDriver::ProcessGraphAsyncMaster: Process error
JackEngine::XRun: client = rosegarden was not finished, state = Triggered
JackAudioDriver::ProcessGraphAsyncMaster: Process error
JackEngine::XRun: client = rosegarden was not finished, state = Triggered
JackAudioDriver::ProcessGraphAsyncMaster: Process error
JackEngine::XRun: client = rosegarden was not finished, state = Triggered
JackAudioDriver::ProcessGraphAsyncMaster: Process error
JackEngine::XRun: client = rosegarden was not finished, state = Triggered
JackAudioDriver::ProcessGraphAsyncMaster: Process error
Segmentation fault (core dumped)
sje@sje-System:~/Desktop$ Unknown error...
terminate called after throwing an instance of 'Jack::JackTemporaryException'
port deleted: rosegarden:midi/capture_1
what():
port deleted: rosegarden:midi/capture_3
port deleted: rosegarden:midi/playback_2
port deleted: rosegarden:midi/playback_3
port deleted: rosegarden:midi/playback_4


Any help appreciated. Thanks,
Simon