Simple difference operations not working, depending on parameters

[Dimitre]

This operation works

	ofxCorkCsg::box(mesh1, 300, 300, 50);
	ofxCorkCsg::box(mesh2, 200, 200, 160);
	ofxCorkCsg::computeDifference(mesh1, mesh2, outMesh);

And this doens't work

	ofxCorkCsg::box(mesh1, 300, 300, 50);
	ofxCorkCsg::box(mesh2, 240, 240, 160);
	ofxCorkCsg::computeDifference(mesh1, mesh2, outMesh);

Cheers!