diff --git a/js/appcommon.js b/js/appcommon.js
index 321439a..81229d3 100644
--- a/js/appcommon.js
+++ b/js/appcommon.js
@@ -90,60 +90,64 @@ $.ready(function () {
     e.preventDefault()
   })
 
-  do {
-    let msgAt, box
-    // populate the form errors box from GET arg ?err=...
-    // (a way to pass errors back from server via redirect)
-    msgAt = window.location.search.indexOf('err=')
-    if (msgAt !== -1 && qs('.Box.errors')) {
-      let errs = decodeURIComponent(window.location.search.substr(msgAt + 4)).split(',')
-      let humanReadableErrors = []
-      errs.forEach(function (er) {
-        let lbls = qsa('label[for="' + er + '"]')
-        if (lbls) {
-          for (let i = 0; i < lbls.length; i++) {
-            let lbl = lbls[i]
-            lbl.classList.add('error')
-            if (i === 0) humanReadableErrors.push(lbl.childNodes[0].textContent.trim().replace(/: ?$/, ''))
+  try {
+    do {
+      let msgAt, box
+      // populate the form errors box from GET arg ?err=...
+      // (a way to pass errors back from server via redirect)
+      msgAt = window.location.search.indexOf('err=')
+      if (msgAt !== -1 && qs('.Box.errors')) {
+        let errs = decodeURIComponent(window.location.search.substr(msgAt + 4)).split(',')
+        let humanReadableErrors = []
+        errs.forEach(function (er) {
+          let lbls = qsa('label[for="' + er + '"]')
+          if (lbls) {
+            for (let i = 0; i < lbls.length; i++) {
+              let lbl = lbls[i]
+              lbl.classList.add('error')
+              if (i === 0) humanReadableErrors.push(lbl.childNodes[0].textContent.trim().replace(/: ?$/, ''))
+            }
+          } else {
+            humanReadableErrors.push(er)
           }
-        } else {
-          humanReadableErrors.push(er)
-        }
-      })
-
-      qs('.Box.errors .list').innerHTML = humanReadableErrors.join(', ')
-      qs('.Box.errors').classList.remove('hidden')
-      break
-    }
+        })
+
+        qs('.Box.errors .list').innerHTML = humanReadableErrors.join(', ')
+        qs('.Box.errors').classList.remove('hidden')
+        break
+      }
 
-    let fademsgbox = function (box, time) {
-      box.classList.remove('hidden')
-      setTimeout(() => {
-        box.classList.add('hiding')
+      let fademsgbox = function (box, time) {
+        box.classList.remove('hidden')
         setTimeout(() => {
-          box.classList.add('hidden')
-        }, 1000)
-      }, time)
-    }
+          box.classList.add('hiding')
+          setTimeout(() => {
+            box.classList.add('hidden')
+          }, 1000)
+        }, time)
+      }
 
-    msgAt = window.location.search.indexOf('errmsg=')
-    box = qs('.Box.errmessage')
-    if (msgAt !== -1 && box) {
-      let msg = decodeURIComponent(window.location.search.substr(msgAt + 7))
-      box.innerHTML = msg
-      fademsgbox(box, 3000)
-      break
-    }
+      msgAt = window.location.search.indexOf('errmsg=')
+      box = qs('.Box.errmessage')
+      if (msgAt !== -1 && box) {
+        let msg = decodeURIComponent(window.location.search.substr(msgAt + 7))
+        box.innerHTML = msg
+        fademsgbox(box, 3000)
+        break
+      }
 
-    msgAt = window.location.search.indexOf('msg=')
-    box = qs('.Box.message')
-    if (msgAt !== -1 && box) {
-      let msg = decodeURIComponent(window.location.search.substr(msgAt + 4))
-      box.innerHTML = msg
-      fademsgbox(box, 2000)
-      break
-    }
-  } while (0)
+      msgAt = window.location.search.indexOf('msg=')
+      box = qs('.Box.message')
+      if (msgAt !== -1 && box) {
+        let msg = decodeURIComponent(window.location.search.substr(msgAt + 4))
+        box.innerHTML = msg
+        fademsgbox(box, 2000)
+        break
+      }
+    } while (0)
+  } catch (e) {
+    console.error(e)
+  }
 
   modal.init()
   notify.init()