*This is what is shown in /var/log/koha/library/opac-error.log*[Fri Aug 16 11:52:37 2013] [error] [client 127.0.0.1] Use of uninitialized value in concatenation (.) or string at[Fri Aug 16 11:52:37 2013] [error] [client 127.0.0.1] \t/usr/share/koha/lib/C4/Auth_with_cas.pm line 113 (#1)[Fri Aug 16 11:52:37 2013] [error] [client 127.0.0.1] (W uninitialized) An undefined value was used as if it were already[Fri Aug 16 11:52:37 2013] [error] [client 127.0.0.1] defined. It was interpreted as a "" or a 0, but maybe it was a mistake.[Fri Aug 16 11:52:37 2013] [error] [client 127.0.0.1] To suppress this warning assign a defined value to your variables.[Fri Aug 16 11:52:37 2013] [error] [client 127.0.0.1] [Fri Aug 16 11:52:37 2013] [error] [client 127.0.0.1] To help you figure out what was undefined, perl will try to tell you the[Fri Aug 16 11:52:37 2013] [error] [client 127.0.0.1] name of the variable (if any) that was undefined. In some cases it cannot[Fri Aug 16 11:52:37 2013] [error] [client 127.0.0.1] do this, so it also tells you what operation you used the undefined value[Fri Aug 16 11:52:37 2013] [error] [client 127.0.0.1] in. Note, however, that perl optimizes your program and the operation[Fri Aug 16 11:52:37 2013] [error] [client 127.0.0.1] displayed in the warning may not necessarily appear literally in your[Fri Aug 16 11:52:37 2013] [error] [client 127.0.0.1] program. For example, "that $foo" is usually optimized into "that "[Fri Aug 16 11:52:37 2013] [error] [client 127.0.0.1] . $foo, and the warning will refer to the concatenation (.) operator,[Fri Aug 16 11:52:37 2013] [error] [client 127.0.0.1] even though there is no . in your program.[Fri Aug 16 11:52:37 2013] [error] [client 127.0.0.1] [Fri Aug 16 11:52:37 2013] [error] [client 127.0.0.1] [Fri Aug 16 11:52:37 2013] opac-user.pl: Use of uninitialized value in concatenation (.) or string at /usr/share/koha/lib/C4/Auth_with_cas.pm line 113.[Fri Aug 16 11:52:37 2013] [error] [client 127.0.0.1] Use of uninitialized value in concatenation (.) or string at[Fri Aug 16 11:52:37 2013] [error] [client 127.0.0.1] \t/usr/share/koha/lib/C4/Auth_with_cas.pm line 94 (#1)[Fri Aug 16 11:52:37 2013] [error] [client 127.0.0.1] [Fri Aug 16 11:52:37 2013] opac-user.pl: Use of uninitialized value in concatenation (.) or string at /usr/share/koha/lib/C4/Auth_with_cas.pm line 94.*And this is the corresponding CAS log entry:*2013-08-16 11:52:44,327 INFO [org.jasig.cas.CentralAuthenticationServiceImpl] - Granted service ticket [ST-1-VT7CnsmeojJBWi2qcKTx-cas01.example.org] for service [http://localhost:9081/cgi-bin/koha/opac-user.pl] for user [060143]2013-08-16 11:52:44,328 INFO [com.github.inspektr.audit.support.Slf4jLoggingAuditTrailManager] - Audit trail record BEGIN=============================================================WHO: 060143WHAT: ST-1-VT7CnsmeojJBWi2qcKTx-cas01.example.org for http://localhost:9081/cgi-bin/koha/opac-user.plACTION: SERVICE_TICKET_CREATEDAPPLICATION: CASWHEN: Fri Aug 16 11:52:44 EDT 2013CLIENT IP ADDRESS: 192.168.137.15SERVER IP ADDRESS: 192.168.137.5============================================================= -- View this message in context: http://koha.1045719.n5.nabble.com/CAS-Authentication-Explained-tp5764435p576... Sent from the Koha-general mailing list archive at Nabble.com.