I have the same error here. Both kdevelop 4.5 and a recent checkout from git:
eendebakpt@woelmuis:~/.cache$ kdevelop KGlobal::locale(): Warning your global KLocale is being recreated with a valid main component instead of a fake component, this usually means you tried to call i18n related functions before your main component was created. You should not do that since it most likely will not work WARNING: deleting stale lockfile /home/eendebakpt/.kde/share/apps/kdevelop/sessions/{13148919-5e7d-4b19-a0b5-30ea263343ca}/lock kdevelop(14219)/kdecore (KLibrary) findLibraryInternal: plugins should not have a 'lib' prefix: "libkonsolepart.so" qrc:/main.qml:23:1: QML Loader: Binding loop detected for property "source" static bool QDeclarativeMetaType::isModule(const QByteArray&, int, int) Qt 4.7 import detected; please note that Qt 4.7 is directly reusable as QtQuick 1.x with no code changes. Continuing, but startup time will be slower. kdevelop(14219)/konsole Konsole::Session::run: Attempted to re-run an already running session. The program 'kdevelop' received an X Window System error. This probably reflects a bug in the program. The error was 'BadWindow (invalid Window parameter)'. (Details: serial 1354 error_code 3 request_code 20 minor_code 0) (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 --sync command line option to change this behavior. You can then get a meaningful backtrace from your debugger if you break on the gdk_x_error() function.) kdevelop(14219)/konsole Konsole::SessionManager::~SessionManager: Konsole SessionManager destroyed with sessions still alive register count: 0, destroy count 0: eendebakpt@woelmuis:~/.cache$ kdevelop --version Qt: 4.8.4 KDE Development Platform: 4.10.4 KDevelop: 4.5.1 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1178843 Title: kdevelop won't start To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/kdevelop/+bug/1178843/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs