I did what you noted however, I still get the following message

"The version of ProSeries you are using is no longer current. Though this does not affect any returns you have already e-filed, you must update your tax program before electronically filing additional returns. To update your program, go to the Update menu and select 'Update Installed Products'. ProSeries will automatically download any updates available for currently installed products. After updating, you must also reconvert all files that are ready to transmit electronically. 

Not transmitted, the amended return(s) failed the tax submission amended return validation step. Please make the necessary corrections."

I updated the installed products and reconverted the file and still does not work.