CPAN doesn't find anything (relevant) matching EnsEMBL - maybe whatever documentation or script Aester is using refers to an old/different version of BioPerl?

Ah yes, that's the culprit; I searched on CPAN for Bio::EnsEMBL::Registry and got one hit from the BioPerl distribution - I didn't notice that the name didn't match.
Perl 6 - second systems done right

I did, with the same result.

I uploaded a screenshot, perhaps I missed somewhere.

Now that's really weird. How did you install BioPerl?

Another idea: there could be two perls installed on your system, and you installed BioPerl for the "wrong" one.

P.S. pasting text errors as images is detrimental to readiblity; I for one don't like scaled down images of screenshots when simple text would have been enough.

Perl 6 - second systems done right

Ok, will remember that, but it's the same error as in my first post.

Hmm I installed BioPerl as written on http://www.bioperl.org/. That went flawlessly.

And no, I checked again, there's only one perl.exe file on my computer.

Thanks for your help!