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On Kubuntu 14.10 ECLIPSE Luna SR1 (x86_64) completely crashes after startup on 1 - 2 mouseclicks: ERROR: java: /build/buildd/gtk2-engines-oxygen-1.4.5/src/animations/oxygencomboboxdata.cpp:87: void Oxygen::ComboBoxData::setButton(GtkWidget*): Zusicherung »!_button._widget« nicht erfüllt.
Hello (Guten Tag) Wolfgang, Judging from this line: gtk2-engines-oxygen You're using the oxygen theme with gtk2. Those two together seem to cause crashes. Ref1: "Per instructions found on the Ubuntu site, I can change the GTK2 theme from oxygen to Raleigh and the crash goes away." https://bugs.eclipse.org/bugs/show_bug.cgi?id=419729 Ref2: http://www.exelisvis.com/Support/HelpArticles/TabId/185/ArtMID/800/ArticleID/13816/Using-GTK2-oxygen-gtk-Theme-or-Oxygen-Widget-Style-on-Linux-can-cause-IDL-83-Workbench-to-crash.aspx Could you please try to change your *Gtk* theme and see if the issue still occurs? Please try "Adwaita". It works well with Eclipse. You can use Ubuntu Tweak tool for this purpose: http://askubuntu.com/questions/361422/how-can-you-change-the-gtk-theme-and-window-decorations-separately-in-unity More info: Applications > Settings > System settings > Application Appearance http://itsfoss.com/how-to-install-themes-in-ubuntu-13-10/
As pointed out in comment 1, this crash is caused by using the oxygen gtk theme and nothing much can be done in Eclipse or SWT to prevent/fix the crash. Closing the bug as NOT_ECLIPSE.
This bug has been fixed in the oxygen-gtk2 theme itself, refer to bug 445220 for details. *** This bug has been marked as a duplicate of bug 445220 ***
