A common mistake is to assume the current directory is the directory in which the script resides. If that's the case here, you could be attempting to load images which cannot be found.

One solution is to explicitely switch the current directory to the one containing the script. 

use File::Basename        qw( dirname );
use File::Spec::Functions qw( rel2abs );
BEGIN { chdir(dirname(rel2abs($0))); }

[download]

By the way, could you explain what exec $0 if not $imgStream; accomplishes (besides introducing a potential infinite loop)?

In reply to Re: Using GD in a CGI script to randomly select images fails... by ikegami
in thread Using GD in a CGI script to randomly select images fails... by blue_cowdawg

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