"An illegal choice has been detected" I have an image field attached to a content type created. When I upload images to it, it gives me an error "an illegal choice has been detected please contact sight administrator."  I get this error when uploading images only on this content type.



I cleared watchdog entries, form and image cache tables; it started working again, but when I create a second page, the problem shows again.

How can I avoid this error?
I found the answer here.

The required field radio button was not selected, when the image was uploaded. It seems an error with the form validating when the image is uploaded.