[AfterEffects CS6] : Crash when removing a child control

Question

Hello,
I work in a script for AfterEffect (JSX).
In certain situations I remove controls from a panel, it usualy works.
But sometime, this code crashes (inside 'remove'):
childCheckbox = myPanel.children[0];
myPanel.remove(childCheckbox);
According to the object browser:
myPanel is a 'Panel' object
childCheckbox is a 'Checkbox' object.
I can read this message:
Bad argument Function {LiveObject("Panel").property('find')} is undefined
Does anybody could explain that to me ?
What's wrong ?
Thanks
Nico

Answer 1

Hello,
I get the same behavior inside 'for' loop.
I try to use a temporary array in order to list all controls to remove
Code sample:
var children = parent.children;
var childrenToRemove           = [];
for (var index = 0; index < children.length; index++) {
  var child = children[index];
  if (child != childToPreserve && isUIControl(child)) {
    childrenToRemove.push(child);
// Remove controls in the reverse order.
childrenToRemove.reverse();
for (var index in childrenToRemove) {
  var controlToDelete = childrenToRemove[index];
  // 'index' is invalid here, it references 'indexOf'
Is there anybody who has an idea ?
Thanks
Nico