Does anyone know what could cause the following bugzilla problems:

Code:
Software error:

Can't locate Email/Address.pm in @INC (@INC contains: . lib/i386-linux-thread-multi lib /usr/lib/perl5/site_perl/5.8.8/i386-linux-thread-multi /usr/lib/perl5/site_perl/5.8.7/i386-linux-thread-multi /usr/lib/perl5/site_perl/5.8.6/i386-linux-thread-multi /usr/lib/perl5/site_perl/5.8.5/i386-linux-thread-multi /usr/lib/perl5/site_perl/5.8.8 /usr/lib/perl5/site_perl/5.8.7 /usr/lib/perl5/site_perl/5.8.6 /usr/lib/perl5/site_perl/5.8.5 /usr/lib/perl5/site_perl /usr/lib/perl5/vendor_perl/5.8.8/i386-linux-thread-multi /usr/lib/perl5/vendor_perl/5.8.7/i386-linux-thread-multi /usr/lib/perl5/vendor_perl/5.8.6/i386-linux-thread-multi /usr/lib/perl5/vendor_perl/5.8.5/i386-linux-thread-multi /usr/lib/perl5/vendor_perl/5.8.8 /usr/lib/perl5/vendor_perl/5.8.7 /usr/lib/perl5/vendor_perl/5.8.6 /usr/lib/perl5/vendor_perl/5.8.5 /usr/lib/perl5/vendor_perl /usr/lib/perl5/5.8.8/i386-linux-thread-multi /usr/lib/perl5/5.8.8) at Bugzilla/Mailer.pm line 48.
BEGIN failed--compilation aborted at Bugzilla/Mailer.pm line 48.
Compilation failed in require at Bugzilla/Token.pm line 35.
BEGIN failed--compilation aborted at Bugzilla/Token.pm line 35.
Compilation failed in require at Bugzilla/Auth/Persist/Cookie.pm line 37.
BEGIN failed--compilation aborted at Bugzilla/Auth/Persist/Cookie.pm line 37.
Compilation failed in require at Bugzilla/Auth.pm line 37.
BEGIN failed--compilation aborted at Bugzilla/Auth.pm line 37.
Compilation failed in require at Bugzilla.pm line 40.
BEGIN failed--compilation aborted at Bugzilla.pm line 40.
Compilation failed in require at index.cgi line 34.
BEGIN failed--compilation aborted at index.cgi line 34.

For help, please send mail to the webmaster (bradley@mydomain.com), giving this error message and the time and date of the error.