Simple formula results in error message

Simple formula results in error message

Hi there,

I am trying to insert a formula field into a form and it keeps giving me the following error message when I click on "done" in the Adding Formula window:

Exception occured while publishing message to the topic :: [DataModelTopic]

I am not a programmer, and cannot comprehend deluge suggestions. I just want to multiple one number field by another number field!

thanks!

Jenny