print is your friend :-)
print'ing out debug messages often helps very much, sometimes combined with Data::Dumper: 
use Data::Dumper;
print STDERR '@INC: '.Dumper(\@INC)."\n\%INC: ".Dumper(\%INC)."\n";

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I tend to add the use Data::Dumper; in the same line as the debug print when adding short-time prints which get deleted once the problem is solved. This is no good syntax, but saves you from forgetting to remove the use once you don't longer need it.

In reply to Re: FindBin doens't work by Sewi
in thread FindBin doens't work by o_chfa

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