diff --git a/core-ajax.html b/core-ajax.html
index 9cbfd78..4dbddfb 100644
--- a/core-ajax.html
+++ b/core-ajax.html
@@ -238,6 +238,9 @@
       try {
         return JSON.parse(r);
       } catch (x) {
+        console.warn('core-ajax caught an exception trying to parse reponse as JSON:');
+        console.warn('url:', this.url);
+        console.warn(x);
         return r;
       }
     },