Hi hiruzen,
I have not use XML::Schematron::LibXSLT before, but looking at the documentation on metacpan, I think you are not using the module as stated.
In the Synopsis, I didn't see anything like: 

  ... = XML::Schematron::LibXSLT->new() # empty new method

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What I can see is  ... = XML::Schematron::LibXSLT->new(schema => 'my_schema.xml') # note that

Then did you notice this: 
use XML::Schematron;
my $pseudotron = XML::Schematron->>new_with_traits( traits => ['LibXSL
+T'], schema => 'my_schema.xml');

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Note the ->>, but you used -> Maybe if you make those changes it would work. Just what I observed.
Update:
Note that '->>' as specified in the module documentation is actually a typo. Noted by AM and the OP of this thread. I only wonder why that was not spotted for such a long time atleast about 24 months now.
If you tell me, I'll forget.
If you show me, I'll remember.
if you involve me, I'll understand.
--- Author unknown to me

In reply to Re: Validating XML file with XML::Schematron::LibXSLT by 2teez
in thread Validating XML file with XML::Schematron::LibXSLT by hiruzen

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