diff --git a/.vscode/settings.json b/.vscode/settings.json
new file mode 100644
index 00000000..06caa9d9
--- /dev/null
+++ b/.vscode/settings.json
@@ -0,0 +1,5 @@
+{
+    "files.associations": {
+        "map": "cpp"
+    }
+}
\ No newline at end of file
diff --git a/src/editor.cpp b/src/editor.cpp
index 85cc7fd1..241c1600 100644
--- a/src/editor.cpp
+++ b/src/editor.cpp
@@ -374,13 +374,22 @@ void Editor::deleteWildMonGroup() {
 
     if (msgBox.clickedButton() == deleteButton) {
         auto it = project->wildMonData.find(map->constantName);
-        it.value().erase(labelCombo->currentText());
+        if (it == project->wildMonData.end()) {
+          logError(QString("Failed to find data for map %s. Unable to delete").arg(map->constantName));
+          return;
+        }
 
         int i = project->encounterGroupLabels.indexOf(labelCombo->currentText());
+        if (i < 0) {
+          logError(QString("Failed to find selected wild mon group: %s. Unable to delete")
+                   .arg(labelCombo->currentText()));
+          return;
+        }
+
+        it.value().erase(labelCombo->currentText());
         project->encounterGroupLabels.remove(i);
 
         displayWildMonTables();
-
         emit wildMonDataChanged();
     }
 }