Eclipse GC overhead limit exceeded

I saw there are more topics about this problem, but I don't found any solution for my case.

I tried :

-> Clean Project / Restart Eclipse (and Mac too)
-> Change XMS size in eclipse.ini
-> Delete JAR and add again

I saw this "crash" doesn't appear if I uncheck "android privates libraries" in my project's properties..... Why ? What am I supposed to do ?