diff --git a/contrib/plugins/calendar/panels/calendar.html b/contrib/plugins/calendar/panels/calendar.html
index d3f3c3e..2749956 100644
--- a/contrib/plugins/calendar/panels/calendar.html
+++ b/contrib/plugins/calendar/panels/calendar.html
@@ -436,7 +436,7 @@ body {
         if (msg.categories) state.categories = msg.categories;
         state.eventsLoaded = true;
         state.panelReady = true;
-        render();
+        try { render(); } catch(e) { try { window.parent.go.main.App.WriteDebugLog('[iframe] render error: ' + String(e) + ' ' + JSON.stringify({message: e.message, stack: e.stack?.substring(0,200)})); } catch(e2) {} }
         break;
 
       case 'drop':
diff --git a/frontend/src/lib/CalendarPluginPage.svelte b/frontend/src/lib/CalendarPluginPage.svelte
index e7d2450..9e027ce 100644
--- a/frontend/src/lib/CalendarPluginPage.svelte
+++ b/frontend/src/lib/CalendarPluginPage.svelte
@@ -115,7 +115,9 @@
         categories,
       })
       // Confirm delivery via Go log
-      try { window.go.main.App.WriteDebugLog('[CalendarPluginPage] calendar-data sent to iframe, events=' + events.length + ', categories=' + (categories?.length || 0)) } catch(e) {}
+      try { window.go.main.App.WriteDebugLog('[CalendarPluginPage] calendar-data sent to iframe, events=' + events.length + ', categories=' + (categories?.length || 0)) } catch(e) {
+        try { window.go.main.App.WriteDebugLog('[CalendarPluginPage] ERROR in WriteDebugLog: ' + String(e) + ' | eventsRaw=' + String(eventsRaw) + ' | typeof eventsRaw=' + typeof eventsRaw + ' | typeof events=' + typeof events + ' | events===' + JSON.stringify(events)) } catch(e2) {}
+      }
     } catch (e) {
       console.error('[CalendarPluginPage] loadCalendarData:', e)
       console.log('[CalendarPluginPage] error details:', JSON.stringify({message: String(e), stack: e?.stack}))