Thank you very much for your feedback Rob. As many other starting to post here I do not feel very experienced and questioning modules listed at CPAN feels wrong but it looks to me that the code should be more like: 
sub creatCatalogGroup {
   my ($self, $key) = @_;

# pls.don't forget this problem
  (exists @{$self}[0]->{$key}) ? return @{$self}[0]->{$key} :
        return Push2PsH($self, $key, CatalogGroup->new());
}

[download]

I am not yet sure if it does the right thing, but at least it does not throw an error.

Cheers

Niko

In reply to Re^2: Error with CPAN module XML-BMEcat by derion
in thread Error with CPAN module XML-BMEcat by derion

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