Ganymede RC3 XPCOM error -2147467262
https://bugs.eclipse.org/bugs/show_bug.cgi?id=213194
http://www.eclipsepowered.org/eclipse/forums/m92239944.html
~ >apt-get xulrunner
Just adding:
-Dorg.eclipse.swt.browser.XULRunnerPath=/usr/lib/xulrunner
to my eclipse.ini worked for me.
done !