Keep receiving an error when creating a workflow to send an email.

Hello: 

We're trying to keep a handle on when users add Accounts into our system to make sure that the Accounts information is entered correctly. To help monitor this I decided to create a workflow that will send an email to our Admin overtime a new account is created.  

I know (or at least I thought I did) how to create a workflow to check a condition and then send an email if desired.  My issue is with this current one I get an error message every time I try to save the workflow.  

I'm able to save the work flow as long as I don't use the Form Assistant to enter the values I want in the email. As soon as I enter any record from the Form Assistant into the email, I get the attached error message from CRM.

Any ideas?

Thank you in advance!