diff --git a/ui/mock-server.js b/ui/mock-server.js
index 31b5d03..fc03b12 100644
--- a/ui/mock-server.js
+++ b/ui/mock-server.js
@@ -5,6 +5,7 @@ const app = express()
 const port = 3000
 
 let showError = false
+let showConfigError = false
 let maintenance = false
 let launcher = false
 let fileExists = false
@@ -30,7 +31,7 @@ function progressSimulation (res) {
 }
 
 function returnConfig (res) {
-  if (showError) {
+  if (showConfigError) {
     res.status(500).json({})
     return
   }
@@ -144,6 +145,14 @@ process.argv.forEach((val, index) => {
       darkMode = true
       console.log('Simulating dark mode')
       break
+    case 'config-error':
+      showConfigError = true
+      console.log('Simulating configuration errors')
+      break
+    case 'error':
+      showError = true
+      console.log('Simulating errors')
+      break
   }
 })
 
diff --git a/ui/src/main.js b/ui/src/main.js
index 9d3cf11..6544040 100644
--- a/ui/src/main.js
+++ b/ui/src/main.js
@@ -124,7 +124,7 @@ var app = new Vue({
   methods: {
     exit: function () {
       axios.get('/api/exit').catch(function (msg) {
-        var searchLocation = app.metadata.install_path.length > 0 ? app.metadata.install_path
+        var searchLocation = (app.metadata.install_path && app.metadata.install_path.length > 0) ? app.metadata.install_path
           : i18n.t('error.location_unknown')
 
         app.$router.replace({