Thats what i did, filled box A and B for my two dependents but left C and D blank. Thats when i got the letter that the form was incomplete. I tried calling IRS and no luck with an answer wait times were to long and was told my automated service to try again another day. I contacted the place where i filed eztaxreturn and they said they had 4 similar cases and once the form was resubmitted via fax or mail, they had no other problems. I guess its a glitch on their end or something when we e-file.