You didn't undo all the changes. Something is still broken. Unfortunately, nobody here will be able to tell you what is wrong unless you make the script available for inspection.

Here's line 447 of utf8_heavy.pl on my version of Perl 5.14:

$list = do $file; die $@ if $@;
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I only spent a couple of minutes looking at the (disturbingly ugly) utf8_heavy.pl code, but gather that $file is supposed to be a code file of utf8 definitions of some sort. In your case, $file contains something that your version of Perl can't compile.

Did someone screw up your system Perl by attempting to manually install some upgraded components? That's what it looks like to me.

Thank you, I found what it was, the problem was that I used something like:

$page_content{$image} = edit_string("CONTENT\n=====\n\n");
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Without my %page_content However, I wonder why I don't get normal perl errors, but have to find out myself what is wrong.