Version:           kprinter-applet version unknown (using KDE 4.2.0)
Compiler:          gcc (Debian 4.3.2-1.1) 4.3.2  / g++ (Debian 4.3.2-1.1) 4.3.2 
OS:                Linux
Installed from:    Compiled From Sources

kprinter-applet seems to be started automatically upon login. I was not aware of this, as I do not seem to recall that I configured this. This is fine. However, since last revision build (release day), whenever I log in the applet crashes with the following stack trace:

Application: Printer Applet (printer-applet), signal SIGABRT

Thread 1 (Thread 0xb7db38c0 (LWP 4023)):
[KCrash Handler]
#6  0xffffe410 in __kernel_vsyscall ()
#7  0xb7ddf640 in raise () from /lib/i686/cmov/libc.so.6
#8  0xb7de1018 in abort () from /lib/i686/cmov/libc.so.6
#9  0xb77a09fb in qt_message_output (msgType=QtFatalMsg, buf=0xbfc26900 "ASSERT failure in QDBusConnection::registerObject: \"Invalid object path given\", file qdbusconnection.cpp, line 680")
    at global/qglobal.cpp:2102
#10 0xb77a0a5f in qFatal (msg=0xb78ecafc "ASSERT failure in %s: \"%s\", file %s, line %d") at global/qglobal.cpp:2303
#11 0xb77a0aa4 in qt_assert_x (where=0xb5cc9edc "QDBusConnection::registerObject", what=0xb5cc9e9c "Invalid object path given", file=0xb5cc9e88 "qdbusconnection.cpp", line=680)
    at global/qglobal.cpp:1880
#12 0xb5c8c7c2 in QDBusConnection::registerObject (this=0xbfc28a30, path=@0x84c7da0, object=0x84c8e70, options={i = -1077769696}) at qdbusconnection.cpp:679
#13 0xb542ddfe in KMainWindowPrivate::polish (this=0x84c7d70, q=0x84c8e70) at /home/kde-devel/kde/src/KDE/kdelibs/kdeui/widgets/kmainwindow.cpp:380
#14 0xb542debc in KMainWindow::event (this=0x84c8e70, ev=0xbfc28f94) at /home/kde-devel/kde/src/KDE/kdelibs/kdeui/widgets/kmainwindow.cpp:1039
#15 0xb546fecd in KXmlGuiWindow::event (this=0x84c8e70, ev=0xbfc28f94) at /home/kde-devel/kde/src/KDE/kdelibs/kdeui/xmlgui/kxmlguiwindow.cpp:131
#16 0xb573230a in sipKXmlGuiWindow::event (this=0x84c8e70, a0=0xbfc28f94) at sipkdeuipart0.cpp:8343
#17 0xb6689479 in QApplicationPrivate::notify_helper (this=0x8442910, receiver=0x84c8e70, e=0xbfc28f94) at kernel/qapplication.cpp:3803
#18 0xb668b0ae in QApplication::notify (this=0x8442848, receiver=0x84c8e70, e=0xbfc28f94) at kernel/qapplication.cpp:3768
#19 0xb534f1b7 in KApplication::notify (this=0x8442848, receiver=0x84c8e70, event=0xbfc28f94) at /home/kde-devel/kde/src/KDE/kdelibs/kdeui/kernel/kapplication.cpp:307
#20 0xb5987a85 in sipKApplication::notify (this=0x8442848, a0=0x84c8e70, a1=0xbfc28f94) at sipkdeuipart4.cpp:29792
#21 0xb7899a1b in QCoreApplication::notifyInternal (this=0x8442848, receiver=0x84c8e70, event=0xbfc28f94) at kernel/qcoreapplication.cpp:583
#22 0xb668637f in QCoreApplication::sendEvent (receiver=0x84c8e70, event=0xbfc28f94) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:209
#23 0xb66da675 in QWidget::ensurePolished (this=0x84c8e70) at kernel/qwidget.cpp:8347
#24 0xb66e559a in QWidget::event (this=0x84c8e70, event=0x84c85c8) at kernel/qwidget.cpp:7234
#25 0xb6a6d942 in QMainWindow::event (this=0x84c8e70, event=0x84c85c8) at widgets/qmainwindow.cpp:1268
#26 0xb542e132 in KMainWindow::event (this=0x84c8e70, ev=0x84c85c8) at /home/kde-devel/kde/src/KDE/kdelibs/kdeui/widgets/kmainwindow.cpp:1093
#27 0xb546fecd in KXmlGuiWindow::event (this=0x84c8e70, ev=0x84c85c8) at /home/kde-devel/kde/src/KDE/kdelibs/kdeui/xmlgui/kxmlguiwindow.cpp:131
#28 0xb573230a in sipKXmlGuiWindow::event (this=0x84c8e70, a0=0x84c85c8) at sipkdeuipart0.cpp:8343
#29 0xb6689479 in QApplicationPrivate::notify_helper (this=0x8442910, receiver=0x84c8e70, e=0x84c85c8) at kernel/qapplication.cpp:3803
#30 0xb668b0ae in QApplication::notify (this=0x8442848, receiver=0x84c8e70, e=0x84c85c8) at kernel/qapplication.cpp:3768
#31 0xb534f1b7 in KApplication::notify (this=0x8442848, receiver=0x84c8e70, event=0x84c85c8) at /home/kde-devel/kde/src/KDE/kdelibs/kdeui/kernel/kapplication.cpp:307
#32 0xb5987a85 in sipKApplication::notify (this=0x8442848, a0=0x84c8e70, a1=0x84c85c8) at sipkdeuipart4.cpp:29792
#33 0xb7899a1b in QCoreApplication::notifyInternal (this=0x8442848, receiver=0x84c8e70, event=0x84c85c8) at kernel/qcoreapplication.cpp:583
#34 0xb789d59d in QCoreApplication::sendEvent (receiver=0x84c8e70, event=0x84c85c8) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:209
#35 0xb7899f3b in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x82c78a8) at kernel/qcoreapplication.cpp:1195
#36 0xb789a0f7 in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1091
#37 0xb78c906a in QCoreApplication::sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:214
#38 0xb78c827c in postEventSourceDispatch (s=0x843c120) at kernel/qeventdispatcher_glib.cpp:205
#39 0xb76d51b8 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#40 0xb76d8853 in ?? () from /usr/lib/libglib-2.0.so.0
#41 0x0843c098 in ?? ()
#42 0x00000000 in ?? ()

Cheers,

Filippo