Version:            (using KDE 4.0.1)
Installed from:    Debian testing/unstable Packages
OS:                Linux

I had installed openoffice on my computer. Then I've removed it and replaced it with koffice2 available on Debian testing repositories. When I tried to open a .doc file, dolphin said that openoffice.org-writer didn't exist, but i could open it with another program with the right-clik menu. I remove the writer association in systemsetiings. Then when I open kde applications such as dolphin, konqueror, systemsettings, plasma all of them crashes.  

The backtrace is here:

Using host libthread_db library "/lib/i686/cmov/libthread_db.so.1".
[Thread debugging using libthread_db enabled]
[New Thread 0xb6481720 (LWP 21189)]
[KCrash handler]
#6  0xffffe410 in __kernel_vsyscall ()
#7  0xb6f0cf15 in raise () from /lib/i686/cmov/libc.so.6
#8  0xb6f0e891 in abort () from /lib/i686/cmov/libc.so.6
#9  0xb7e0ca35 in qt_message_output (msgType=QtFatalMsg, 
    buf=0xbfa2b85c "ASSERT: \"!genservicetype.isEmpty()\" in file /build/buildd/kde4libs-4.0.1/kdecore/services/kservicetypeprofile.cpp, line 68")
    at global/qglobal.cpp:2160
#10 0xb7e0cae9 in qFatal (msg=0xb7ef9b64 "ASSERT: \"%s\" in file %s, line %d")
    at global/qglobal.cpp:2392
#11 0xb7e0cc75 in qt_assert (
    assertion=0xb7dbdc0a "!genservicetype.isEmpty()", 
    file=0xb7dbdb74 "/build/buildd/kde4libs-4.0.1/kdecore/services/kservicetypeprofile.cpp", line=68) at global/qglobal.cpp:1917
#12 0xb7cde4d2 in findMimeTypeProfile (mimeType=@0xbfa2daac, 
    genservicetype=@0xbfa2daa8)
    at /build/buildd/kde4libs-4.0.1/kdecore/services/kservicetypeprofile.cpp:68
#13 0xb7cdf165 in initStatic ()
    at /build/buildd/kde4libs-4.0.1/kdecore/services/kservicetypeprofile.cpp:139
#14 0xb7ce0339 in KServiceTypeProfile::hasProfile (serviceType=@0xbfa2dbd0)
    at /build/buildd/kde4libs-4.0.1/kdecore/services/kservicetypeprofile.cpp:316
#15 0xb7ce3a7f in KServiceTypeTrader::query (this=0x80f2800, 
    serviceType=@0xbfa2dbd0, constraint=@0xbfa2dbd4)
    at /build/buildd/kde4libs-4.0.1/kdecore/services/kservicetypetrader.cpp:137
#16 0x08060851 in MainWindow (this=0x81303a0, parent=0x0)
    at /build/buildd/kdebase-workspace-4.0.1/systemsettings/mainwindow.cpp:62
#17 0x0805c3f8 in main (argc=5, argv=0xbfa2dd74)
    at /build/buildd/kdebase-workspace-4.0.1/systemsettings/main.cpp:60
#18 0xb6ef8450 in __libc_start_main () from /lib/i686/cmov/libc.so.6
#19 0x08056a01 in _start ()
#0  0xffffe410 in __kernel_vsyscall ()