diff --git a/src/Logic/Tags/TagUtils.ts b/src/Logic/Tags/TagUtils.ts
index 91ce6c5e1d..f319f13162 100644
--- a/src/Logic/Tags/TagUtils.ts
+++ b/src/Logic/Tags/TagUtils.ts
@@ -98,7 +98,7 @@ export class TagUtils {
                         "Invalid type to flatten the multiAnswer: key is a regex too",
                         tagsFilter
                     )
-                    throw "Invalid type to FlattenMultiAnswer"
+                    throw "Invalid type to FlattenMultiAnswer: key is a regex too"
                 }
                 const keystr = <string>key
                 if (keyValues[keystr] === undefined) {
@@ -109,7 +109,10 @@ export class TagUtils {
             }
 
             console.error("Invalid type to flatten the multiAnswer", tagsFilter)
-            throw "Invalid type to FlattenMultiAnswer"
+            throw (
+                "Invalid type to FlattenMultiAnswer, not one of RegexTag, Tag or And: " +
+                tagsFilter.asHumanString(false, false, {})
+            )
         }
         return keyValues
     }
diff --git a/src/Logic/UIEventSource.ts b/src/Logic/UIEventSource.ts
index 39db7dd4e5..b726465391 100644
--- a/src/Logic/UIEventSource.ts
+++ b/src/Logic/UIEventSource.ts
@@ -357,14 +357,18 @@ class ListenerTracker<T> {
         let toDelete = undefined
         let startTime = new Date().getTime() / 1000
         for (const callback of this._callbacks) {
-            if (callback(data) === true) {
-                // This callback wants to be deleted
-                // Note: it has to return precisely true in order to avoid accidental deletions
-                if (toDelete === undefined) {
-                    toDelete = [callback]
-                } else {
-                    toDelete.push(callback)
+            try {
+                if (callback(data) === true) {
+                    // This callback wants to be deleted
+                    // Note: it has to return precisely true in order to avoid accidental deletions
+                    if (toDelete === undefined) {
+                        toDelete = [callback]
+                    } else {
+                        toDelete.push(callback)
+                    }
                 }
+            } catch (e) {
+                console.error("Got an error while running a callback:", e)
             }
         }
         let endTime = new Date().getTime() / 1000
diff --git a/src/UI/Popup/TagRendering/TagRenderingQuestion.svelte b/src/UI/Popup/TagRendering/TagRenderingQuestion.svelte
index 216468f1b8..9e031f169b 100644
--- a/src/UI/Popup/TagRendering/TagRenderingQuestion.svelte
+++ b/src/UI/Popup/TagRendering/TagRenderingQuestion.svelte
@@ -54,6 +54,7 @@
 
     if (
       confg.mappings?.length > 0 &&
+      confg.multiAnswer &&
       (checkedMappings === undefined ||
         checkedMappings?.length < confg.mappings.length + (confg.freeform ? 1 : 0))
     ) {