Software error:

Can't locate HTML/CalendarMonthSimple.pm in @INC (@INC contains: /usr/lib/perl5/5.10.0/i586-linux-thread-multi /usr/lib/perl5/5.10.0 /usr/lib/perl5/site_perl/5.10.0/i586-linux-thread-multi /usr/lib/perl5/site_perl/5.10.0 /usr/lib/perl5/vendor_perl/5.10.0/i586-linux-thread-multi /usr/lib/perl5/vendor_perl/5.10.0 /usr/lib/perl5/vendor_perl .) at kalender.pl line 11.
BEGIN failed--compilation aborted at kalender.pl line 11.

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