console.log messages in code are bad for Internet Explorer <= 9. This plugin would avoid the application from crashing when console.log messages are present in the javascript code.

console_log_ie_fix.js

;(function () {
    // console.log statements cause issues in Internet Explorer <= 9. 
    // This piece of code prevents the application to fail 
    // Source for console: https://developer.mozilla.org/en-US/docs/Web/API/Console
    var fns = [
        "assert",
        "count",
        "debug",
        "dir",
        "dirxml",
        "error",
        "exception",
        "group",
        "groupCollapsed",
        "groupEnd",
        "info",
        "log",
        "timeStamp",
        "profile",
        "profileEnd",
        "time",
        "timeEnd",
        "trace",
        "warn"];
    var funcName,
    var noop = function () {};
    if (!window.console) {
        window.console = {};
        while (funcName = fns.pop()) {
            window.console[funcName] = noop;
        }
    }
})();