I had been getting the charitable contribution too large error message, but this worked for me. Had to enter the name of the places I donated to (I combined it all on one line) and then the total amount I donated to all the charities. But I still chose the standard deduction.
The other remedies suggested did not work for me but this did. You can check to be sure it works when you review the paperwork -- it's the 10d line or somewhere around there.
