The error log says "Premature end of script headers". This basically means no HTML was returned. Looking into how CGI::Carp works, it is not calling the &fatalsToBrowser function. The reason it is not is it thinks it's in an eval. It looks like after calling XMLin, that the special variable $^S is set. Then CGI:Carp doesn't dump the error messages to the screen. Do you have any insight into why $^S is set after calling XMLin?