diff --git a/db.js b/db.js
index 5276c10..12c7a72 100644
--- a/db.js
+++ b/db.js
@@ -13,8 +13,11 @@ module.exports.CreateDB = function(meshserver) {
     var obj = {};
     obj.dbVersion = 2;
     const expireLogEntrySeconds = (60 * 60 * 24 * 30); // 30 days
-    if (meshserver.args.mongodb) { // use MongDB
-      require('mongodb').MongoClient.connect(meshserver.args.mongodb, { useNewUrlParser: true, useUnifiedTopology: true }, function (err, client) {
+    // Detect MongoDB mode robustly. The plugin is loaded by pluginHandler in a context
+    // where meshserver.args.mongodb may not be populated, so fall back to the parent.
+    var mongoUrl = meshserver.args.mongodb || (meshserver.parent && meshserver.parent.args && meshserver.parent.args.mongodb);
+    if (mongoUrl) { // use MongoDB
+      require('mongodb').MongoClient.connect(mongoUrl, { useNewUrlParser: true, useUnifiedTopology: true }, function (err, client) {
           if (err != null) { console.log("Unable to connect to database: " + err); process.exit(); return; }
           Datastore = client;
           
@@ -205,14 +208,14 @@ module.exports.CreateDB = function(meshserver) {
     } else { // use NeDb
         Datastore = require('nedb');
         if (obj.eventsFile == null) {
-            obj.eventsFile = new Datastore({ filename: meshserver.getConfigFilePath('plugin-eventlog-events.db'), autoload: true });
+            obj.eventsFile = new Datastore({ filename: (typeof meshserver.getConfigFilePath === 'function') ? meshserver.getConfigFilePath('plugin-eventlog-events.db') : require('path').join(meshserver.args.dataPath || '.', 'plugin-eventlog-events.db'), autoload: true });
             obj.eventsFile.persistence.setAutocompactionInterval(40000);
             obj.eventsFile.ensureIndex({ fieldName: 'nodeid' });
             obj.eventsFile.ensureIndex({ fieldName: 'TimeCreated' });
             obj.eventsFile.ensureIndex({ fieldName: 'time', expireAfterSeconds: expireLogEntrySeconds });
         }
         if (obj.settingsFile == null) {
-            obj.settingsFile = new Datastore({ filename: meshserver.getConfigFilePath('plugin-eventlog-settings.db'), autoload: true });
+            obj.settingsFile = new Datastore({ filename: (typeof meshserver.getConfigFilePath === 'function') ? meshserver.getConfigFilePath('plugin-eventlog-settings.db') : require('path').join(meshserver.args.dataPath || '.', 'plugin-eventlog-settings.db'), autoload: true });
             obj.settingsFile.persistence.setAutocompactionInterval(40000);
         }