Comment # 18 on bug 1047852 from Felix Miata

Still happening with libjack0-1.9.12-lp151.3.3.1, possibly taking a bit longer
to manifest. From .xsession-errors:
1571166625338    addons.update-checker    WARN    onUpdateCheckComplete failed
to parse update manifest: [Exception... "Update manifest is missing a required
addons property."  nsresult: "0x80004005 (NS_ERROR_FAILURE)"  location: "JS
frame :: resource://gre/modules/addons/AddonUpdateChecker.jsm ::
getRequiredProperty :: line 473"  data: no] Stack trace:
getRequiredProperty()@resource://gre/modules/addons/AddonUpdateChecker.jsm:473
< parseJSONManifest()@resource://gre/modules/addons/AddonUpdateChecker.jsm:483
<
UpdateParser.prototype.onLoad/parser()@resource://gre/modules/addons/AddonUpdateChecker.jsm:655
<
UpdateParser.prototype.onLoad()@resource://gre/modules/addons/AddonUpdateChecker.jsm:675
< UpdateParser/<()@resource://gre/modules/addons/AddonUpdateChecker.jsm:593 <
onStopRequest()@resource://gre/modules/WebRequest.jsm:347
jack_client_new: deprecated
Cannot connect to server socket err = No such file or directory
Cannot connect to server request channel
jack server is not running or cannot be started
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping
unlock
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping
unlock
akode: Guessed format: xiph
KNotify::playTimeout
jack_client_new: deprecated
Cannot connect to server socket err = No such file or directory
Cannot connect to server request channel
jack server is not running or cannot be started
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping
unlock
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping
unlock
akode: Guessed format: xiph
KNotify::playTimeout
X Error: BadWindow (invalid Window parameter) 3
  Major opcode:  19
  Minor opcode:  0
  Resource id:  0x3800abc
jack_client_new: deprecated
Cannot connect to server socket err = No such file or directory
Cannot connect to server request channel
jack server is not running or cannot be started
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping
unlock
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping
unlock
akode: Guessed format: xiph
KNotify::playTimeout
jack_client_new: deprecated
Cannot connect to server socket err = No such file or directory
Cannot connect to server request channel
jack server is not running or cannot be started
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping
unlock
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping
unlock
akode: Guessed format: xiph
KNotify::playTimeout
jack_client_new: deprecated
Cannot connect to server socket err = No such file or directory
Cannot connect to server request channel
jack server is not running or cannot be started
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping
unlock
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping
unlock
akode: Guessed format: xiph
X Error: BadWindow (invalid Window parameter) 3
  Major opcode:  19
  Minor opcode:  0
  Resource id:  0x3800b46
KNotify::playTimeout
jack_client_new: deprecated
Cannot connect to server socket err = No such file or directory
Cannot connect to server request channel
jack server is not running or cannot be started
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping
unlock
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping
unlock
akode: Guessed format: xiph
KNotify::playTimeout
KCrash: Application 'knotify' crashing...
X Error: BadWindow (invalid Window parameter) 3
  Major opcode:  19
  Minor opcode:  0
  Resource id:  0x3800bbf
X Error: BadWindow (invalid Window parameter) 3
  Major opcode:  20
  Minor opcode:  0
  Resource id:  0x2e0000b
X Error: BadWindow (invalid Window parameter) 3
  Major opcode:  20
  Minor opcode:  0
  Resource id:  0x2e0000b
X Error: BadWindow (invalid Window parameter) 3
  Major opcode:  19
  Minor opcode:  0
  Resource id:  0x2e0000b