ValidatePP.pm
In case you get the same niggling issue with your Movable Type install:
Prototype mismatch: sub Params::Validate::ValidatePP.pm vs (\@@) at
/home/sites/site5/web/mt/extlib/Params/ValidatePP.pm line 139.
Prototype mismatch: sub Params::Validate::validate vs (\@$) at
/home/sites/site5/web/mt/extlib/Params/ValidatePP.pm line 370.
The issue is if the server your site is sitting on is running Perl 5.005_3 (and only that version). It’s only a warning though and shouldn’t cause any real problems.