Hey there. I just had this little gem pop up and I'm wondering if this is expected behavior. If you tween to a very large value and use roundProps, it seems that the value eventually goes negative. Removing roundProps resolves this behavior. Note that manually rounding using Math.round does not do this.
var obj = {
setValue: function (value) {
console.debug(value);},
getValue: function () {return 0;}
}
TweenLite.fromTo(obj, 5, {setValue: 0}, {setValue: 3750000000, roundProps: "setValue"});