foreign tax

first time in 16 years using TurboTax, IRS rejected a return with foreign tax (from 1099-DIV). TurboTax help was totally inept in answering "why." I talked to three technicians? They did send me a comment about Foreign Taxes and the example was on 100,000 $. I had 11.00 dollars credit!

I filed another return for a friend with 85.00 $ Foreign Tax credit and it was accepted! I just gave up on the 11.00$ credit.

Still would like to know why.