If you're seeing "Error evaluating formula" in your output column, try refreshing your browser using Cmd + Shift + R (Mac) or Ctrl + Shift + R (Windows).
For AI formulas specifically, it's normal if they don't work perfectly on the first try. You can:
1. Iterate on your prompts
2. Adjust the wording
3. Modify the generated code directly
4. Use the preview feature to test before applying
If you have dependencies between columns causing issues, ensure columns depending on other data don't have conflicting run conditions.