Problems with Pentaho Spoon and libgobject

I got some problems with Spoon after upgrading Kubuntu 13.04 to 13.10. Nothing really noticeable at first, but suddenly it starts to randomly crash:

Or

Same thing with different version of Java

I found that starting spoon with a none-GTK3 theme fixes the problem.. It doesn’t crash anymore but I do have a lot of warning related to libgobject in the log.

I tried to change the swt.jar to different versions but it didn’t change anything. I’m stuck with the insane amount of warnings, but at least I can use Spoon !

If you have a solution, please let me know !

References: