Error because data structure has changed?

[Tom_automated]

Why would I be getting this error:

I have an action to add a new row to another table (Upload to Gallery). When I click on the action button, everything works fine. But when I try attach the button to the behavior of my form using:

I get the error.

Here is my table:

[Bellave_Jayaram]

I would send this to support@appsheet.com

[OptimiX_XcrY]

Regenerate table structure?

[Tom_automated]

Already tried that.

[Steve]

Please contact support@appsheet.com for help with this.