With the error happening in a file within /usr/lib/perl5/, the problem is VERY likely to be on the server. Especially since it's an undefined symbol (rather than something like an incorrect argument, which can sometimes happen if a module is invoked incorrectly). When you contacted your hosting provider, did you give them the exact error message? If you did, and they blamed the script, try calling again and see if you can get a different tech support person. The symbol dbm_open should definitely be defined, and your script is NOT where it should be defined.

$;=sub{$/};@;=map{my($a,$b)=($_,$;);$;=sub{$a.$b->()}}
split//,".rekcah lreP rehtona tsuJ";$\=$ ;->();print$/
[download]