plank crashed with signal 5 in _XReply()

[James]

Plank crashed while changing themes using plank-themer-ondock. Although it crashes only on few of them.
plank -d gave me this:
[INFO 19:54:38.689030] [AbstractMain:170] Plank version: 0.7.1.1092
[INFO 19:54:38.689120] [AbstractMain:171] Kernel version: 3.13.0-37-generic
[INFO 19:54:38.689177] [AbstractMain:172] GLib version: 2.40.0
[INFO 19:54:38.689238] [AbstractMain:173] GTK+ version: 3.10.8
[INFO 19:54:38.689289] [AbstractMain:175] + HiDPI support enabled
[INFO 19:54:38.689338] [AbstractMain:177] Wnck version: 3.4.9
[INFO 19:54:38.689392] [AbstractMain:178] Cairo version: 1.13.1
[INFO 19:54:38.689450] [AbstractMain:179] Pango version: 1.36.3
[INFO 19:54:38.722786] [WindowControl:62] Window-manager: Xfwm4
[DEBUG 19:54:38.730584] [Preferences:328] Loading preferences from file '/home/james/.config/plank/dock1/settings'
[DEBUG 19:54:38.772326] [Preferences:328] Loading preferences from file '/usr/share/plank/themes/Elite/dock.theme'
[WARN 19:54:38.772735] [Preferences:344] Missing key 'ItemMoveTime' for group 'PlankDrawingDockTheme' in preferences file '/usr/share/plank/themes/Elite/dock.theme' - using default value
[DEBUG 19:54:38.772982] [Preferences:510] Saving preferences '/usr/share/plank/themes/Elite/dock.theme'
[DEBUG 19:54:38.836336] [ApplicationDockItemProvider:72] Unity: Initalizing LauncherEntry support
[DEBUG 19:54:38.836761] [ItemFactory:155] Loading dock items from '/home/james/.config/plank/dock1/launchers'
[DEBUG 19:54:38.837788] [Preferences:328] Loading preferences from file '/home/james/.config/plank/dock1/launchers/xfce4-terminal.dockitem'
[DEBUG 19:54:38.839310] [Preferences:328] Loading preferences from file '/home/james/.config/plank/dock1/launchers/xfce-settings-manager.dockitem'
[DEBUG 19:54:38.840595] [Preferences:328] Loading preferences from file '/home/james/.config/plank/dock1/launchers/steam.dockitem'
[DEBUG 19:54:38.842150] [Preferences:328] Loading preferences from file '/home/james/.config/plank/dock1/launchers/qBittorrent.dockitem'
[DEBUG 19:54:38.842902] [Preferences:328] Loading preferences from file '/home/james/.config/plank/dock1/launchers/libreoffice-startcenter.dockitem'
[DEBUG 19:54:38.843819] [Preferences:328] Loading preferences from file '/home/james/.config/plank/dock1/launchers/ubuntu-software-center.dockitem'
[DEBUG 19:54:38.844629] [Preferences:328] Loading preferences from file '/home/james/.config/plank/dock1/launchers/plank-themer-ondock.dockitem'
[DEBUG 19:54:38.845520] [Preferences:328] Loading preferences from file '/home/james/.config/plank/dock1/launchers/plank.dockitem'
[DEBUG 19:54:38.846251] [Preferences:328] Loading preferences from file '/home/james/.config/plank/dock1/launchers/chromium-browser.dockitem'
[DEBUG 19:54:38.847106] [Preferences:328] Loading preferences from file '/home/james/.config/plank/dock1/launchers/audacious.dockitem'
[DEBUG 19:54:38.847834] [Preferences:328] Loading preferences from file '/home/james/.config/plank/dock1/launchers/Thunar.dockitem'
[DEBUG 19:54:38.848591] [Preferences:328] Loading preferences from file '/home/james/.config/plank/dock1/launchers/vlc.dockitem'
[DEBUG 19:54:38.849385] [Preferences:328] Loading preferences from file '/home/james/.config/plank/dock1/launchers/pcsx.dockitem'
[DEBUG 19:54:38.850081] [Preferences:328] Loading preferences from file '/home/james/.config/plank/dock1/launchers/gvbam.dockitem'
[DEBUG 19:54:38.850740] [Preferences:328] Loading preferences from file '/home/james/.config/plank/dock1/launchers/mousepad.dockitem'
[DEBUG 19:54:38.917568] [ApplicationDockItemProvider:157] Unity: com.canonical.Unity acquired
[DEBUG 19:54:38.945910] [DockWindow:283] dock window loaded
[WARN 19:54:43.065346] Failed to fetch xid: GDBus.Error:org.freedesktop.DBus.Error.UnknownMethod: Brak interfejsu "org.ayatana.bamf.window" w obiekcie w ścieżce /org/ayatana/bamf/window/73400356
[WARN 19:54:43.097887] Failed to fetch type: GDBus.Error:org.freedesktop.DBus.Error.UnknownMethod: Brak interfejsu "org.ayatana.bamf.window" w obiekcie w ścieżce /org/ayatana/bamf/window/73400356
[WARN 19:54:43.133168] Failed to fetch monitor: GDBus.Error:org.freedesktop.DBus.Error.UnknownMethod: Brak interfejsu "org.ayatana.bamf.window" w obiekcie w ścieżce /org/ayatana/bamf/window/73400356
[WARN 19:54:43.174002] Failed to fetch maximized state: GDBus.Error:org.freedesktop.DBus.Error.UnknownMethod: Brak interfejsu "org.ayatana.bamf.window" w obiekcie w ścieżce /org/ayatana/bamf/window/73400356
[WARN 19:54:43.206326] Failed to fetch xid: GDBus.Error:org.freedesktop.DBus.Error.UnknownMethod: Brak interfejsu "org.ayatana.bamf.window" w obiekcie w ścieżce /org/ayatana/bamf/window/73400356
[WARN 19:54:43.251714] Unable to fetch children: GDBus.Error:org.freedesktop.DBus.Error.UnknownMethod: Brak interfejsu "org.ayatana.bamf.view" w obiekcie w ścieżce /org/ayatana/bamf/application/0x85c8d0
[WARN 19:54:43.289477] Failed to fetch path: GDBus.Error:org.freedesktop.DBus.Error.UnknownMethod: Brak interfejsu "org.ayatana.bamf.application" w obiekcie w ścieżce /org/ayatana/bamf/application/0x85c8d0
[DEBUG 19:54:44.027066] [Preferences:328] Loading preferences from file '/home/james/.config/plank/dock1/settings'
[WARN 19:54:51.085023] Failed to fetch xid: GDBus.Error:org.freedesktop.DBus.Error.UnknownMethod: Brak interfejsu "org.ayatana.bamf.window" w obiekcie w ścieżce /org/ayatana/bamf/window/73400356
[WARN 19:54:51.121887] Failed to fetch path: GDBus.Error:org.freedesktop.DBus.Error.UnknownMethod: Brak interfejsu "org.ayatana.bamf.application" w obiekcie w ścieżce /org/ayatana/bamf/application/0x85c8d0
[WARN 19:54:51.158350] Failed to fetch xids: GDBus.Error:org.freedesktop.DBus.Error.UnknownMethod: Brak interfejsu "org.ayatana.bamf.application" w obiekcie w ścieżce /org/ayatana/bamf/application/0x85c8d0
[WARN 19:54:51.158527] [WindowControl:117] plank_services_windows_window_control_get_num_windows: runtime check failed: (_tmp2_ != NULL)
[DEBUG 19:54:52.047512] [Preferences:328] Loading preferences from file '/home/james/.config/plank/dock1/settings'
[DEBUG 19:54:52.068517] [Preferences:328] Loading preferences from file '/usr/share/plank/themes/Fresh/dock.theme'
[WARN 19:55:02.461430] [Gdk] The program 'plank' received an X Window System error.This probably reflects a bug in the program.The error was 'BadDrawable (invalid Pixmap or Window parameter)'. (Details: serial 25771 error_code 9 request_code 130 (MIT-SHM) minor_code 5) (Note to programmers: normally, X errors are reported asynchronously; that is, you will receive the error a while after causing it. To debug your program, run it with the GDK_SYNCHRONIZE environment variable to change this behavior. You can then get a meaningful backtrace from your debugger if you break on the gdk_x_error() function.)
Pułapka debuggera/breakpoint (core dumped)

system specs:
Kernel: 3.13.0-37-generic x86_64 (64 bit)
Desktop: Xfce 4.11.6
Window manager: xfce? default in xubuntu anyway
Distro: Ubuntu 14.04 trusty
Plank version: 0.7.1.1092
Graphics data from inxi: Card: Intel 3rd Gen Core processor Graphics Controller
           X.Org: 1.15.1 drivers: ati,radeon,intel (unloaded: fbdev,vesa) Resolution: 1366x768@60.0hz
           GLX Renderer: Mesa DRI Intel Ivybridge Mobile GLX Version: 3.0 Mesa 10.1.3
composition manager: Compton

I think that's all info I could gather for this. Good luck to anyone and thanks in advance!

ProblemType: Crash
DistroRelease: Ubuntu 14.04
Package: plank 0.7.1+bzr1092+r1-0ubuntu1~14.04~ricotz1 [origin: LP-PPA-ricotz-docky]
ProcVersionSignature: Ubuntu 3.13.0-37.64-generic 3.13.11.7
Uname: Linux 3.13.0-37-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.5
Architecture: amd64
CrashCounter: 1
CrashDB: plank
CurrentDesktop: XFCE
Date: Sat Oct 11 19:42:06 2014
ExecutablePath: /usr/bin/plank
InstallationDate: Installed on 2014-09-30 (10 days ago)
InstallationMedia: Xubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140723)
ProcCmdline: plank
ProcEnviron:
 LANGUAGE=pl
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=pl_PL.UTF-8
 SHELL=/bin/bash
Signal: 5
SourcePackage: plank
StacktraceTop:
 ?? () from /usr/lib/x86_64-linux-gnu/libX11.so.6
 ?? () from /usr/lib/x86_64-linux-gnu/libX11.so.6
 _XReply () from /usr/lib/x86_64-linux-gnu/libX11.so.6
 XSync () from /usr/lib/x86_64-linux-gnu/libX11.so.6
 ?? () from /usr/lib/x86_64-linux-gnu/libcairo.so.2
SuspiciousXErrors.txt:

ThirdParty: True
Title: plank crashed with signal 5 in _XReply()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo