diff same server in 2 environments?

[KlavsKlavsen]

I am trying to diff catalog for the same server - in two different environments (using same puppetmaster).
But when I run:
time /opt/puppetlabs/puppet/bin/puppet catalog diff myweb01.example.com/production myweb01.example.com/devel1
--show_resource_diff
--content_diff
--yamldir $YAMLDIR
--ssldir $SSLDIR
--changed_depth 1000
--configtimeout 1000
--output_report "${HOME}/lastrun-$$.json"
--debug
--threads 50 | tee -a lastrun-$$.log

I get this odd error:
Error: Error retrieving facts from dmz-puppet-p01.example.com: Server hostname 'dmz-puppet-p01.example.com' did not match server certificate; expected one of "puppet master cert names"
Error: Try 'puppet help catalog diff' for usage

I would like to test the change in my devel1 environment against all of my servers (or atleast many) - to see what servers it will affect (and what it will do).