gistfile1.txt

error: Timestamp: 13-03-27 11:49:57 AM
Error: courseratrops: An exception occurred.
Error: The page is currently hidden and can no longer be used until it is visible again.
resource://anonid0-marcio-at-jetpack/addon-sdk/lib/sdk/content/worker.js 397
Traceback (most recent call last):
  File "resource://anonid0-marcio-at-jetpack/addon-sdk/lib/sdk/timers.js", line 31, in notify
    callback.apply(null, args);
  File "resource://anonid0-marcio-at-jetpack/addon-sdk/lib/sdk/content/worker.js", line 111, in onContentEvent/<
    self._emit.apply(self, JSON.parse(args));
  File "resource://anonid0-marcio-at-jetpack/addon-sdk/lib/sdk/deprecated/events.js", line 123, in _emit
    return this._emitOnObject.apply(this, args);
  File "resource://anonid0-marcio-at-jetpack/addon-sdk/lib/sdk/deprecated/events.js", line 153, in _emitOnObject
    listener.apply(targetObj, params);
  File "resource://anonid0-marcio-at-jetpack/addon-sdk/lib/sdk/content/worker.js", line 230, in portEmit
    self._addonWorker._onContentScriptEvent.apply(self._addonWorker, arguments);
  File "resource://anonid0-marcio-at-jetpack/addon-sdk/lib/sdk/widget.js", line 804, in 
    self._widget._onPortEvent(arguments);
  File "resource://anonid0-marcio-at-jetpack/addon-sdk/lib/sdk/widget.js", line 451, in WidgetView__onPortEvent
    basePort._emit.apply(basePort, args);
  File "resource://anonid0-marcio-at-jetpack/addon-sdk/lib/sdk/deprecated/events.js", line 123, in _emit
    return this._emitOnObject.apply(this, args);
  File "resource://anonid0-marcio-at-jetpack/addon-sdk/lib/sdk/deprecated/events.js", line 153, in _emitOnObject
    listener.apply(targetObj, params);
  File "resource://anonid0-marcio-at-jetpack/courseratrops/lib/main.js", line 65, in exports.main/<
    toggle(+1);
  File "resource://anonid0-marcio-at-jetpack/courseratrops/lib/main.js", line 38, in toggle
    function (selector) {
  File "resource://anonid0-marcio-at-jetpack/courseratrops/lib/main.js", line 39, in 
    selector.postMessage(value);
  File "resource://anonid0-marcio-at-jetpack/addon-sdk/lib/sdk/content/worker.js", line 397, in postMessage
    throw new Error(ERR_FROZEN);