I had a copy of the old file socketclient.js located in MagicMirror/js folder. once I replaced the new new file with the backup it is working.
Here is the Key line that needs fixed.

replace

// Private Methods
self.socket = io("/" + self.moduleName, {
	path: window.location.pathname + "socket.io"
});

with

// Private Methods
    self.socket = io("/" + self.moduleName);

@karsten13 actually no I didn’t. I had backed up my entire MagicMirror folder and all sub folders before upgrading. I saw another post where they said they changed the socketclient back to before upgrade. so I did the same thing. after making a backup of the new socketclient.js file.

@karsten13

var MMSocket = function(moduleName) {
	var self = this;

	if (typeof moduleName !== "string") {
		throw new Error("Please set the module name for the MMSocket.");
	}

	self.moduleName = moduleName;

	// Private Methods
	self.socket = io("/" + self.moduleName);
	var notificationCallback = function() {};

	var onevent = self.socket.onevent;
	self.socket.onevent = function(packet) {
		var args = packet.data || [];
		onevent.call(this, packet);    // original call
		packet.data = ["*"].concat(args);
		onevent.call(this, packet);      // additional call to catch-all
	};

	// register catch all.
	self.socket.on("*", function(notification, payload) {
		if (notification !== "*") {
			notificationCallback(notification, payload);
		}
	});

	// Public Methods
	this.setNotificationCallback = function(callback) {
		notificationCallback = callback;
	};

	this.sendNotification = function(notification, payload) {
		if (typeof payload === "undefined") {
			payload = {};
		}
		self.socket.emit(notification, payload);
	};
};

@karsten13 yes mine appears to be working, but I don’t edit my config there, I edit via SSH.

I can’t seem to get the upload screenshot to work, but yes I see all my modules.

I had a copy of the old file socketclient.js located in MagicMirror/js folder. once I replaced the new new file with the backup it is working.
Here is the Key line that needs fixed.

replace

// Private Methods
self.socket = io("/" + self.moduleName, {
	path: window.location.pathname + "socket.io"
});

with

// Private Methods
    self.socket = io("/" + self.moduleName);

I updated to MM 2.11and the MMM-Remote-Control module quit working. I have tried checking settings, totally removing the module and reinstalling. I have not been successful in getting it to work.

no, the SimpleLogo auto changer part still is not working.

@sdetweil yes, and the on screen option works fine changes the logo as expected.

@sdetweil

                                        },
                                notify2: {
                                        title: "Support",
                                        notification: "SIMPLE_LOGO_UPDATE",
                                        payload: {
                                                fileUrl: "modules/MMM-SimpleLogo/public/RedSupport.jpg",
                                                width: "150px"
                                                }
                                        },

@sdetweil

I added this to the config.js file

            {
            module: "MMM-OnScreenMenu",
                    position: "bottom_right",
                    config: {
                            menuItems: {
                            notify1: {
                                    title: "Patch",
                                    notification: "SIMPLE_LOGO_UPDATE",
                                    payload: {
                                            fileUrl: "modules/MMM-SimpleLogo/public/Amc.JPG",
                                            width: "200px"
                                            }

@sdetweil
Based on the section “Notification Events” I added a section as called out.
this isn’t letting me paste it in here, says it is spam.