Try asking the company you bought it from, or contract someone to look into it for you. Without having seen the source or the data its working with, we can only guess ourselves.
I have no clue why it would need the functionality that was disabled; also, the error message is about bad data, not trying to do something that isn't allowed. Since I don't have access to the script, I can't tell you if there is a correlation between the disabled functionality and the bad data error message.
Perl / MySQL / HTML+CSS