[warning: assignment within conditional. did you mean == instead of =?]

I was getting these warnings with Adobe's latest ASC 2.0 compiler. You can fix it like this

 

Change:

if (allTrue || (tween is SimpleTimeline) || ((isDC = (TweenLite(tween).target == TweenLite(tween).vars.onComplete)) && delayedCalls) || (tweens && !isDC)) {

To:

isDC = (TweenLite(tween).target;

if (allTrue || (tween is SimpleTimeline) || ((isDC == TweenLite(tween).vars.onComplete)) && delayedCalls) || (tweens && !isDC)) {

 

Chnage:

if ((ar = this._autoRotate)) {

To:

ar = this._autoRotate;

if (ar) {

 

Change:

if (end != null && (c = (typeof(end) === "number" || end.charAt(1) !== "=") ? Number(end) - start : int(end.charAt(0)+"1") * Number(end.substr(2)))) {

To:

var c:Number  = (typeof(end) === "number" || end.charAt(1) !== "=") ? Number(end) - start : int(end.charAt(0)+"1") * Number(end.substr(2));

if (end != null && c) {

 

Change:

if ((pt._prev = pt2 ? pt2._prev : last)) {

To:

pt._prev = pt2;

if ((pt._prev ? pt2._prev : last)) {

 

Change:

if ((pt._next = pt2)) {

To:

pt._next = pt2;

if (pt._next) {

 

Obviously you'll have to reapply these fixes every time you update your Greensock library. Alternatively you can go back to using the old Flex compiler.