diff --git a/apps/quicklaunch/boot.js b/apps/quicklaunch/boot.js
index 4faf925e8..89a24aa02 100644
--- a/apps/quicklaunch/boot.js
+++ b/apps/quicklaunch/boot.js
@@ -1,6 +1,6 @@
 (function() {
   var settings = Object.assign(require("Storage").readJSON("quicklaunch.json", true) || {});
-    
+      
   if (!settings.leftapp) {
     settings["leftapp"] = {"name":"(none)"};
     require("Storage").write("quicklaunch.json",settings);
@@ -30,7 +30,8 @@
     if (!mode.startsWith("clock")) return;
 
   function tap() {
-    if (settings.tapapp.src) load (settings.tapapp.src);
+    var apps = require("Storage").list(/\.info$/).map(app=>{var a=require("Storage").readJSON(app,1);return a&&{src:a.src};});
+    if ((settings.tapapp.src) && apps.some(e => e.src === settings.tapapp.src)) load (settings.tapapp.src);
   }
     
   let drag;
@@ -43,13 +44,14 @@
     } else if (!e.b) { // released
       const dx = e.x-drag.x, dy = e.y-drag.y;
       drag = null;
+      var apps = require("Storage").list(/\.info$/).map(app=>{var a=require("Storage").readJSON(app,1);return a&&{src:a.src};});
       if (Math.abs(dx)>Math.abs(dy)+10) {
-        if ((settings.leftapp.src) && dx<0) load(settings.leftapp.src);
-        if ((settings.rightapp.src) && dx>0) load(settings.rightapp.src);
+        if ((settings.leftapp.src) && apps.some(e => e.src === settings.leftapp.src) && dx<0) load(settings.leftapp.src);
+        if ((settings.rightapp.src) && apps.some(e => e.src === settings.rightapp.src) && dx>0) load(settings.rightapp.src);
       } 
       else if (Math.abs(dy)>Math.abs(dx)+10) {
-        if ((settings.upapp.src) && dy<0) load(settings.upapp.src);
-        if ((settings.downapp.src) && dy>0) load(settings.downapp.src);
+        if ((settings.upapp.src) && apps.some(e => e.src === settings.upapp.src) && dy<0) load(settings.upapp.src);
+        if ((settings.downapp.src) && apps.some(e => e.src === settings.downapp.src) && dy>0) load(settings.downapp.src);
       }
     }
   });