I would suspect something like this somewhere in the code: 

...
my $mysub = some_op_returning_empty_string;
$mysub->();

[download]

Advice: brute-force it. Stick in some print statements using divide-and-conquer, and look for that kind of sub invocation. Maybe do a "grep '\$.*-> *(' filename" on the code. 

-- 
I hate storms, but calms undermine my spirits.
 -- Bernard Moitessier, "The Long Way"

In reply to Re: MT5: Undefined Subroutine Called Uploading Image by oko1
in thread MT5: Undefined Subroutine Called Uploading Image by luis.roca

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