what's this error?

[Jeff Peng]

Hello,all,
I wrote a perl program using Cache::Memcached module (memcached's Perl API) 
to communicate with memcached.When I run it,I got the errors as follow:


Fri Jul 21 15:44:34 2006  Magic number checking on storable string failed at 
../../lib/Storable.pm (autosplit into ../../lib/auto/Storable/thaw.al) line 
358.

Fri Jul 21 15:44:34 2006  Magic number checking on storable string failed at 
../../lib/Storable.pm (autosplit into ../../lib/auto/Storable/thaw.al) line 
358, at /usr/lib/perl5/site_perl/5.8.0/Cache/Memcached.pm line 598



could you tell me how about these errors?Thank you.