Try inserting the following line between lines 2 and 3 of the code sample above: 

$| = 1;

[download]
This will cause your output to be flushed immediately, rather than buffered (the default), which may help if an error is occurring and is arriving before the 'Content-type' header.

HTH.

In reply to Re: CGI: Premature end of script headers by atcroft
in thread CGI: Premature end of script headers by true

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