MochiKit.Signal and IE 6

[Theuni]

Hi,

I have a problem with MochiKit.Signal in IE 6.

When I leave a page that uses MochiKit.Signal (even if it's just
included not really used) i get the error: "Object 'length' is null or
..." (Freely translated from German error message).

This is the corresponding code where the error happens:

Signal.js:
_unloadCache: function () {
var self = MochiKit.Signal;
var observers = self._observers;

for (var i = 0; i < observers.length; i++) {
-----------------------------------------------^ that's the bad boy
self._disconnect(observers[i]);
}

Some hints that I can come up with:
- It works on FF and IE 7
- Tests are passing
- Fails with some earlier version from SVN trunk and current SVN trunk
- I'm also using MochiKit.Sortable
- MochiKit.Signal._observer seems to disappear too early. But the
unload method seems not to be called twice.

Thanks for any help in advance,
Christian

[Theuni]

For the record:

Always include the MochiKit javascript first, and then your own user
libraries. Otherwise you'll get weird errors that are hard to
understand and hard to debug.