Partial fix #5538

src/database/mongo.js

@@ -166,7 +166,7 @@
 	};
 
 	module.checkCompatibility = function (callback) {
-		var mongoPkg = require.main.require('./node_modules/mongodb/package.json');
+		var mongoPkg = require('mongodb/package.json');
 
 		if (semver.lt(mongoPkg.version, '2.0.0')) {
 			return callback(new Error('The `mongodb` package is out-of-date, please run `./nodebb setup` again.'));

src/reset.js

@@ -1,5 +1,6 @@
 'use strict';
 
+var path = require('path');
 var winston = require('winston');
 var nconf = require('nconf');
 var async = require('async');
@@ -83,7 +84,7 @@ function resetTheme(themeId, callback) {
 	var meta = require('./meta');
 	var fs = require('fs');
 
-	fs.access('node_modules/' + themeId + '/package.json', function (err) {
+	fs.access(path.join(__dirname, '../node_modules', themeId, 'package.json'), function (err) {
 		if (err) {
 			winston.warn('[reset] Theme `%s` is not installed on this forum', themeId);
 			callback(new Error('theme-not-found'));