1. TweenLite.from(mc,2,{scaleX:2,paused:true}); //"paused" doesn't work here
I think the resolution is: In TweenLite.renderTime method, "this.active=true" should be put in "if(!this.cachedPaused)" block.
2. var tm:TweenMax = TweenMax.to(mc, 5, { x:500, y:500, roundProps:["y", "x"],immediateRender:true} );
tm.killVars( { y:1 } ); //This doesn't work
I think the resolution is: In TweenMax.init method, after a prop added to the RoundPropsPlugin,if the plugin already exists, the propTweenLookup should also update. "this.propTweenLookup[prop] = this.cachedPT1;" should be added after the plugin.add mothod.