Premature end of script headers is the error you get when you aren't printing headers; though it's not the only way to get it. Are you sure you are printing your call to $q->header? At this point, I would recommend adding-

use CGI::Carp qw( fatalsToBrowser warningsToBrowser );

-to the top of your script. But only in development. Never in production.

In reply to Re^5: Ajax and CGI problem by Your Mother
in thread Ajax and CGI problem by heatblazer

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