I can't actually make out your screenshot very well, it's too small even in modal . However, I can see a message stating lang_not_found.
Try regenerating your files (refresh), rebuild and re-install...
Let us know:
- What COOK version your using (1.5 or 2.0b)
Then, from your CONFIG in the builder
- JS Framework (MooTools/JQuery)
- Form Style (Condensed/Exploded/JDom)
- Where DB automation is occurring (Model/Table)
- Timeout (20/30/40s)
Also, could you paste the URL of the page in the screenshot too please?
Best wishes,
Gez