This is SO ridiculous.  I keep getting conflicting errors.  If I don't check Part VI (federal electronic filing box), Proseries gives me an error stating "Cannot electronically file Form 1040X when the original return is NOT marked for eflle Part VI", so I check it - then it gets rejected stating "If Federal return is not being filed, UNCHECK Federal Electronic Filing box in Part VI".  From what I am reading, proseries help is useless (what a surprise) and it seems as though the only resolution is to mail it in.  Kind of defeats the purpose of proseries