Triceratops synth dies after scrolling 6-7 patches, forced to reload

I’ve been playing with this synth and noticed this behaviour of dropping out after scrolling something like 6-7 patches. Reload and its good again.

It happened both on stable and Oram.

Log paste below:

Apr 23 12:57:25 zynthian startx[4440]: ERROR:zynthian_engine.proc_cmd: Can’t exec engine command: preset file:///usr/lib/lv2/triceratops-presets.lv2/synths_had_a_drink.ttl => End Of File (EOF). Exception style platform.
Apr 23 12:57:25 zynthian startx[4440]: <pexpect.pty_spawn.spawn object at 0x7f483d8710>
Apr 23 12:57:25 zynthian startx[4440]: command: /usr/local/bin/jalv
Apr 23 12:57:25 zynthian startx[4440]: args: [‘/usr/local/bin/jalv’, ‘-n’, ‘Triceratops-02’, ‘http://nickbailey.co.nr/triceratops’]
Apr 23 12:57:25 zynthian startx[4440]: buffer (last 100 chars): b’’
Apr 23 12:57:25 zynthian startx[4440]: before (last 100 chars): b’/synths_had_a_drink.ttl\r\npreset file:///usr/lib/lv2/triceratops-presets.lv2/synths_had_a_drink.ttl\r\n’
Apr 23 12:57:25 zynthian startx[4440]: after: <class ‘pexpect.exceptions.EOF’>
Apr 23 12:57:25 zynthian startx[4440]: match: None
Apr 23 12:57:25 zynthian startx[4440]: match_index: None
Apr 23 12:57:25 zynthian startx[4440]: exitstatus: None
Apr 23 12:57:25 zynthian startx[4440]: flag_eof: True
Apr 23 12:57:25 zynthian startx[4440]: pid: 5266
Apr 23 12:57:25 zynthian startx[4440]: child_fd: 66
Apr 23 12:57:25 zynthian startx[4440]: closed: False
Apr 23 12:57:25 zynthian startx[4440]: timeout: 20
Apr 23 12:57:25 zynthian startx[4440]: delimiter: <class ‘pexpect.exceptions.EOF’>
Apr 23 12:57:25 zynthian startx[4440]: logfile: None
Apr 23 12:57:25 zynthian startx[4440]: logfile_read: None
Apr 23 12:57:25 zynthian startx[4440]: logfile_send: None
Apr 23 12:57:25 zynthian startx[4440]: maxread: 2000
Apr 23 12:57:25 zynthian startx[4440]: ignorecase: False
Apr 23 12:57:25 zynthian startx[4440]: searchwindowsize: None
Apr 23 12:57:25 zynthian startx[4440]: delaybeforesend: 0
Apr 23 12:57:25 zynthian startx[4440]: delayafterclose: 0.1
Apr 23 12:57:25 zynthian startx[4440]: delayafterterminate: 0.1
Apr 23 12:57:25 zynthian startx[4440]: searcher: searcher_re:
Apr 23 12:57:25 zynthian startx[4440]: 0: re.compile(b’\n> ‘)
Apr 23 12:57:26 zynthian startx[4440]: ZynCore->setup_behaviour_zyncoder(0, …): Invalid index!
Apr 23 12:57:26 zynthian startx[4440]: ZynCore->setup_behaviour_zyncoder(1, …): Invalid index!
Apr 23 12:57:26 zynthian startx[4440]: ZynCore->setup_behaviour_zyncoder(2, …): Invalid index!
Apr 23 12:57:26 zynthian startx[4440]: ZynCore->setup_behaviour_zyncoder(3, …): Invalid index!
Apr 23 12:57:27 zynthian startx[4440]: ZynCore->setup_behaviour_zyncoder(0, …): Invalid index!
Apr 23 12:57:27 zynthian startx[4440]: ZynCore->setup_behaviour_zyncoder(1, …): Invalid index!
Apr 23 12:57:29 zynthian startx[4440]: ZynCore->setup_behaviour_zyncoder(3, …): Invalid index!
Apr 23 12:57:30 zynthian startx[4440]: ZynCore->setup_behaviour_zyncoder(3, …): Invalid index!
Apr 23 12:57:32 zynthian startx[4440]: ZynCore->setup_behaviour_zyncoder(3, …): Invalid index!
Apr 23 12:57:32 zynthian startx[4440]: ZynCore->setup_behaviour_zyncoder(2, …): Invalid index!
Apr 23 12:57:35 zynthian startx[4440]: ZynCore->setup_behaviour_zyncoder(3, …): Invalid index!
Apr 23 12:57:35 zynthian startx[4440]: ZynCore->setup_behaviour_zyncoder(2, …): Invalid index!
Apr 23 12:57:35 zynthian startx[4440]: ZynCore->setup_behaviour_zyncoder(3, …): Invalid index!
Apr 23 12:57:52 zynthian startx[4440]: WARNING:zynthian_autoconnect.cb_jack_xrun: Jack Audio XRUN! =>count: 310, delay: 0.0us
Apr 23 12:57:52 zynthian startx[4440]: WARNING:zynthian_autoconnect.cb_jack_xrun: Jack Audio XRUN! =>count: 311, delay: 0.0us
Apr 23 12:57:54 zynthian startx[4440]: ERROR:zynthian_engine.proc_cmd: Can’t exec engine command: preset file:///usr/lib/lv2/triceratops-presets.lv2/sing.ttl => End Of File (EOF). Exception style platform.
Apr 23 12:57:54 zynthian startx[4440]: <pexpect.pty_spawn.spawn object at 0x7f48415450>
Apr 23 12:57:54 zynthian startx[4440]: command: /usr/local/bin/jalv
Apr 23 12:57:54 zynthian startx[4440]: args: [’/usr/local/bin/jalv’, ‘-n’, ‘Triceratops-03’, ‘http://nickbailey.co.nr/triceratops’]
Apr 23 12:57:54 zynthian startx[4440]: buffer (last 100 chars): b’’
Apr 23 12:57:54 zynthian startx[4440]: before (last 100 chars): b’preset file:///usr/lib/lv2/triceratops-presets.lv2/sing.ttl\r\n’
Apr 23 12:57:54 zynthian startx[4440]: after: <class ‘pexpect.exceptions.EOF’>
Apr 23 12:57:54 zynthian startx[4440]: match: None
Apr 23 12:57:54 zynthian startx[4440]: match_index: None
Apr 23 12:57:54 zynthian startx[4440]: exitstatus: None
Apr 23 12:57:54 zynthian startx[4440]: flag_eof: True
Apr 23 12:57:54 zynthian startx[4440]: pid: 5299
Apr 23 12:57:54 zynthian startx[4440]: child_fd: 64
Apr 23 12:57:54 zynthian startx[4440]: closed: False
Apr 23 12:57:54 zynthian startx[4440]: timeout: 20
Apr 23 12:57:54 zynthian startx[4440]: delimiter: <class ‘pexpect.exceptions.EOF’>
Apr 23 12:57:54 zynthian startx[4440]: logfile: None
Apr 23 12:57:54 zynthian startx[4440]: logfile_read: None
Apr 23 12:57:54 zynthian startx[4440]: logfile_send: None
Apr 23 12:57:54 zynthian startx[4440]: maxread: 2000
Apr 23 12:57:54 zynthian startx[4440]: ignorecase: False
Apr 23 12:57:54 zynthian startx[4440]: searchwindowsize: None
Apr 23 12:57:54 zynthian startx[4440]: delaybeforesend: 0
Apr 23 12:57:54 zynthian startx[4440]: delayafterclose: 0.1
Apr 23 12:57:54 zynthian startx[4440]: delayafterterminate: 0.1
Apr 23 12:57:54 zynthian startx[4440]: searcher: searcher_re:
Apr 23 12:57:54 zynthian startx[4440]: 0: re.compile(b’\n> ‘)
Apr 23 12:57:55 zynthian startx[4440]: ERROR:zynthian_engine.proc_cmd: Can’t exec engine command: preset file:///usr/lib/lv2/triceratops-presets.lv2/scifi.ttl => End Of File (EOF). Exception style platform.
Apr 23 12:57:55 zynthian startx[4440]: <pexpect.pty_spawn.spawn object at 0x7f48415450>
Apr 23 12:57:55 zynthian startx[4440]: command: /usr/local/bin/jalv
Apr 23 12:57:55 zynthian startx[4440]: args: [’/usr/local/bin/jalv’, ‘-n’, ‘Triceratops-03’, ‘http://nickbailey.co.nr/triceratops’]
Apr 23 12:57:55 zynthian startx[4440]: buffer (last 100 chars): b’’
Apr 23 12:57:55 zynthian startx[4440]: before (last 100 chars): ‘’
Apr 23 12:57:55 zynthian startx[4440]: after: <class ‘pexpect.exceptions.EOF’>
Apr 23 12:57:55 zynthian startx[4440]: match: None
Apr 23 12:57:55 zynthian startx[4440]: match_index: None
Apr 23 12:57:55 zynthian startx[4440]: exitstatus: None
Apr 23 12:57:55 zynthian startx[4440]: flag_eof: True
Apr 23 12:57:55 zynthian startx[4440]: pid: 5299
Apr 23 12:57:55 zynthian startx[4440]: child_fd: 64
Apr 23 12:57:55 zynthian startx[4440]: closed: False
Apr 23 12:57:55 zynthian startx[4440]: timeout: 20
Apr 23 12:57:55 zynthian startx[4440]: delimiter: <class ‘pexpect.exceptions.EOF’>
Apr 23 12:57:55 zynthian startx[4440]: logfile: None
Apr 23 12:57:55 zynthian startx[4440]: logfile_read: None
Apr 23 12:57:55 zynthian startx[4440]: logfile_send: None
Apr 23 12:57:55 zynthian startx[4440]: maxread: 2000
Apr 23 12:57:55 zynthian startx[4440]: ignorecase: False
Apr 23 12:57:55 zynthian startx[4440]: searchwindowsize: None
Apr 23 12:57:55 zynthian startx[4440]: delaybeforesend: 0
Apr 23 12:57:55 zynthian startx[4440]: delayafterclose: 0.1
Apr 23 12:57:55 zynthian startx[4440]: delayafterterminate: 0.1
Apr 23 12:57:55 zynthian startx[4440]: searcher: searcher_re:
Apr 23 12:57:55 zynthian startx[4440]: 0: re.compile(b’\n> ')

I suspect this engine is not stable enough. Perhaps we should disable it by default.
Could others confirm the unstability?

Regards