Thank you to all who responded to my question regarding the form 4626 for 1120 Corporations.  Here is another:

As advised I completed the Form 4626 and attached it as a pdf file.  Now I am getting an error message saying:

"This submission contains a form or schedule which MeF is not accepting as a binary attachment.  Please verify whether it is valid for your submission to include the form or schedule.  If valid, complete the form or schedule in the program"

I know the error is due to the attachment because when I remove, the error goes away.  Is anyone else having this issue?