Seems to be doing it for every file I try. I'll export my data and re-install.

I'm uploading a .png, or well... trying to haha.

5f3473142e017918c32286466187e73ceefe0d7e

I was attemping to upload a file for my profile picture (in my profile page)
and I had a fatal error throw:

26/2 13:41 [5564] - error: Error: Invalid format: 0
    at getBytesPerComponent (C:\Users\Jacob\Desktop\Forum\node_modules\jimp\node_modules\exif-parser\lib\exif.js:38:10)
    at readExifTag (C:\Users\Jacob\Desktop\Forum\node_modules\jimp\node_modules\exif-parser\lib\exif.js:45:23)
    at readIFDSection (C:\Users\Jacob\Desktop\Forum\node_modules\jimp\node_modules\exif-parser\lib\exif.js:88:9)
    at Object.module.exports.parseTags (C:\Users\Jacob\Desktop\Forum\node_modules\jimp\node_modules\exif-parser\lib\exif.js:130:3)
    at C:\Users\Jacob\Desktop\Forum\node_modules\jimp\node_modules\exif-parser\lib\parser.js:143:29
    at Object.module.exports.parseSections (C:\Users\Jacob\Desktop\Forum\node_modules\jimp\node_modules\exif-parser\lib\jpeg.js:21:4)
    at Object.Parser.parse (C:\Users\Jacob\Desktop\Forum\node_modules\jimp\node_modules\exif-parser\lib\parser.js:140:8)
    at exifRotate (C:\Users\Jacob\Desktop\Forum\node_modules\jimp\index.js:269:42)
    at Jimp.parseBitmap (C:\Users\Jacob\Desktop\Forum\node_modules\jimp\index.js:250:13)
    at C:\Users\Jacob\Desktop\Forum\node_modules\jimp\index.js:169:29
    at FSReqWrap.readFileAfterClose [as oncomplete] (fs.js:380:3)
Error: Invalid format: 0
    at getBytesPerComponent (C:\Users\Jacob\Desktop\Forum\node_modules\jimp\node_modules\exif-parser\lib\exif.js:38:10)
    at readExifTag (C:\Users\Jacob\Desktop\Forum\node_modules\jimp\node_modules\exif-parser\lib\exif.js:45:23)
    at readIFDSection (C:\Users\Jacob\Desktop\Forum\node_modules\jimp\node_modules\exif-parser\lib\exif.js:88:9)
    at Object.module.exports.parseTags (C:\Users\Jacob\Desktop\Forum\node_modules\jimp\node_modules\exif-parser\lib\exif.js:130:3)
    at C:\Users\Jacob\Desktop\Forum\node_modules\jimp\node_modules\exif-parser\lib\parser.js:143:29
    at Object.module.exports.parseSections (C:\Users\Jacob\Desktop\Forum\node_modules\jimp\node_modules\exif-parser\lib\jpeg.js:21:4)
    at Object.Parser.parse (C:\Users\Jacob\Desktop\Forum\node_modules\jimp\node_modules\exif-parser\lib\parser.js:140:8)
    at exifRotate (C:\Users\Jacob\Desktop\Forum\node_modules\jimp\index.js:269:42)
    at Jimp.parseBitmap (C:\Users\Jacob\Desktop\Forum\node_modules\jimp\index.js:250:13)
    at C:\Users\Jacob\Desktop\Forum\node_modules\jimp\index.js:169:29
    at FSReqWrap.readFileAfterClose [as oncomplete] (fs.js:380:3)
26/2 13:41 [5564] - info: [app] Shutdown (SIGTERM/SIGINT) Initialised.
26/2 13:41 [5564] - info: [app] Database connection closed.
26/2 13:41 [5564] - info: [app] Web server closed to connections.
26/2 13:41 [5564] - info: [app] Shutdown complete.

NOTE, this was after running git pull for the latest fix on uploading default profile pictures.

I'm running on Windows 7, I've tried running via command prompt as admin, as well as power shell.
I launch using node app.js, since ./nodebb start doesn't seem to run anything on localhost.

Here's the error.

26/2 10:55 [5940] - error: /api/admin/uploadDefaultAvatar
 Error: Can't set headers after they are sent.
    at ServerResponse.OutgoingMessage.setHeader (_http_outgoing.js:335:11)
    at ServerResponse.header (C:\Users\Jacob\Desktop\Forum\node_modules\express\lib\response.js:718:10)
    at ServerResponse.send (C:\Users\Jacob\Desktop\Forum\node_modules\express\lib\response.js:163:12)
    at ServerResponse.json (C:\Users\Jacob\Desktop\Forum\node_modules\express\lib\response.js:249:15)
    at C:\Users\Jacob\Desktop\Forum\src\routes\index.js:176:16
    at Layer.handle [as handle_request] (C:\Users\Jacob\Desktop\Forum\node_modules\express\lib\router\layer.js:95:5
)
    at trim_prefix (C:\Users\Jacob\Desktop\Forum\node_modules\express\lib\router\index.js:312:13)
    at C:\Users\Jacob\Desktop\Forum\node_modules\express\lib\router\index.js:280:7
    at Function.process_params (C:\Users\Jacob\Desktop\Forum\node_modules\express\lib\router\index.js:330:12)
    at next (C:\Users\Jacob\Desktop\Forum\node_modules\express\lib\router\index.js:271:10)
    at serveStatic (C:\Users\Jacob\Desktop\Forum\node_modules\express\node_modules\serve-static\index.js:74:16)
    at Layer.handle [as handle_request] (C:\Users\Jacob\Desktop\Forum\node_modules\express\lib\router\layer.js:95:5
)
    at trim_prefix (C:\Users\Jacob\Desktop\Forum\node_modules\express\lib\router\index.js:312:13)
    at C:\Users\Jacob\Desktop\Forum\node_modules\express\lib\router\index.js:280:7
    at Function.process_params (C:\Users\Jacob\Desktop\Forum\node_modules\express\lib\router\index.js:330:12)
    at next (C:\Users\Jacob\Desktop\Forum\node_modules\express\lib\router\index.js:271:10)
Error: Can't set headers after they are sent.
    at ServerResponse.OutgoingMessage.setHeader (_http_outgoing.js:335:11)
    at ServerResponse.header (C:\Users\Jacob\Desktop\Forum\node_modules\express\lib\response.js:718:10)
    at ServerResponse.send (C:\Users\Jacob\Desktop\Forum\node_modules\express\lib\response.js:163:12)
    at ServerResponse.json (C:\Users\Jacob\Desktop\Forum\node_modules\express\lib\response.js:249:15)
    at C:\Users\Jacob\Desktop\Forum\src\routes\index.js:204:8
    at Layer.handle_error (C:\Users\Jacob\Desktop\Forum\node_modules\express\lib\router\layer.js:71:5)
    at trim_prefix (C:\Users\Jacob\Desktop\Forum\node_modules\express\lib\router\index.js:310:13)
    at C:\Users\Jacob\Desktop\Forum\node_modules\express\lib\router\index.js:280:7
    at Function.process_params (C:\Users\Jacob\Desktop\Forum\node_modules\express\lib\router\index.js:330:12)
    at next (C:\Users\Jacob\Desktop\Forum\node_modules\express\lib\router\index.js:271:10)
    at Layer.handle [as handle_request] (C:\Users\Jacob\Desktop\Forum\node_modules\express\lib\router\layer.js:97:5
)
    at trim_prefix (C:\Users\Jacob\Desktop\Forum\node_modules\express\lib\router\index.js:312:13)
    at C:\Users\Jacob\Desktop\Forum\node_modules\express\lib\router\index.js:280:7
    at Function.process_params (C:\Users\Jacob\Desktop\Forum\node_modules\express\lib\router\index.js:330:12)
    at next (C:\Users\Jacob\Desktop\Forum\node_modules\express\lib\router\index.js:271:10)
    at serveStatic (C:\Users\Jacob\Desktop\Forum\node_modules\express\node_modules\serve-static\index.js:74:16)

Ooops! I'm sorry haha, this headache is giving me coding troubles. Thanks!

I'm making a call from register.js to socket.io using the following function

function validateInviteCode(code, use, callback) {
	callback = callback || function() {};
	var invite_code_notify = $('#invite_code_notify');
	
	if (!code.includes(':') || code.split(':')[1].length != 8) {
		showError(invite_code_notify, 'Invalid invite code');
		return callback();
	}
	
	socket.emit('plugins.invite.checkInviteCode', {
		code: code,
		use: use
	}, function(err, valid) {
		if (err) {
			console.log(err);
			app.alertError(err.message);
			return callback();
		}
		
		console.log(valid);
		if (valid) {
			showSuccess(invite_code_notify, successIcon);
		} else {
			showError(invite_code_notify, 'Invalid invite code');
		}
		
		callback();
	});
}

and it's returning err as an empty object { }. This is my server-side listen for it:

checkInviteCode: function (socket, data, fn) {
checkCode(data.code, data.use, function(valid) {
console.log(data, valid);
fn(!socket.uid, valid);
});
}

I'm setting up NodeBB, running Node V0.12.0, with Redis for Windows V 3.0.X.
After running npm install, and then node app --setup, I ran node app and I get the following
error:
[meta/dependencies] Could not read: heapdump

Any ideas?

Just saw this section on the git! Thank you so much for showing me an example ^_^

Wonderful explanation! You are always on point when it comes to explaining things! Thank you so much!