With the head version, everything looks ok, ... but there have been several changes in the error management in the last months. See below for a couple of script aborts with error calls from other includes...
maybe a version issue? what version of assessment are you using with OpenACS5.9.1? Do you get the same error when your create a simple .adp page in openacs-4/www including the ad_script_abort command?
% fgrep -B3 ad_script_abort packages/acs*/lib/*tcl
acs-admin/lib/password-update.tcl-
acs-admin/lib/password-update.tcl-if { ![auth::password::can_change_p -user_id $user_id] } {
acs-admin/lib/password-update.tcl- ad_return_error "Not supported" "Changing password is not supported."
acs-admin/lib/password-update.tcl: ad_script_abort
--
acs-admin/lib/service-parameters.tcl- ad_return_forbidden \
acs-admin/lib/service-parameters.tcl- "Permission Denied" \
acs-admin/lib/service-parameters.tcl- "<blockquote>You don't have permission to view this page.</blockquote>"
acs-admin/lib/service-parameters.tcl: ad_script_abort
--
acs-subsite/lib/login.tcl- || $time < [ns_time] - $expiration_time
acs-subsite/lib/login.tcl- } {
acs-subsite/lib/login.tcl- ad_returnredirect -message [_ acs-subsite.Login_has_expired] -- [export_vars -base [ad_conn url] { return_url }]
acs-subsite/lib/login.tcl: ad_script_abort
--
acs-subsite/lib/user-new.tcl- if {[parameter::get -parameter RegistrationRequiresApprovalP -default 0] &&
acs-subsite/lib/user-new.tcl- $creation_info(account_status) eq "closed"} {
acs-subsite/lib/user-new.tcl- ad_return_warning "Account approval is required" $creation_info(account_message)
acs-subsite/lib/user-new.tcl: ad_script_abort
