> - a completely blank page being returned, with no error reported
> anywhere, or
As I'm sure you know, this generally means that the script has fallen over
before sending much of import to the browser.
/var/log/https/error_log might help...
> Does anyone have any suggestions as to how to investigate the
> Apache/mod_perl system so that I can work out what's going wrong?
Use CGI::Carp::FatalsToBrowser. That causes errors to be sent to the far
end, rather than being buried somwehere...
HTH
Vic.