Inconsistent IE behavior jQuery getScript

Following my own comment :

I've seen the behaviour, although it had nothing to do with jQuery. When you call console from JavaScript, then it throws an exception unless you open Developer Tools, which initializes console object and it works afterwards. It might be the case. If you are not using console, then I do not know what's happening (although you may give us some more details: the actual code + jQuery version). Good luck!

It seems that indeed that was the case. Good. I would like to give you some more advice about debuging. You can (and should) create your own class for handling debuging. For example this can be one option:

function Debuger() {
    var self = this;
    self.cache = [];

    self.dump = function() {
        if (window.console && window.console.log) {
            var l = self.cache.length;
            for (var i = 0; i < l; i++)
                window.console.log.apply(window.console, self.cache[i]);
            self.cache = [];
            /* We have console, we can deactivate monitor... */
            self.deactivate();
            /* ...and even redefine log! */
            self.log = function() {
                window.console.log.apply(window.console, arguments);
            };
        }
    };

    self.log = function() {
        var args = arguments;
        self.cache.push(args);
        self.dump();
    };

    self.monitor_fn = function() {
        self.dump();
    };

    self.activate = function() {
        self.monitor = setInterval(self.monitor_fn, 1000);
    };

    self.deactivate = function() {
        clearInterval(self.monitor);
        self.monitor = null;
    };
}

Simply use it like this:

debuger = new Debuger();
debuger.activate();
debuger.log('Test');

It should work under any browser (didn't test it, though) and if console object is created, then it will dump cached messages to it. Obviously you should customize it to your own needs.