Preload output makes PHP throwing "Can't send header information" error

[Alextopost]

Hi there,

I'm running into trouble with IdoIt 1.48 Open.

There is a file:
isys_module_templates.class.php

On creating instances of a template sometimes the PHP script crashes with a critical error.
This is caused by lines 548ff.
I was able to bypass the problem by commenting the concerning if-statement out. I suppose this part of the method is called before header information has been sent completely

  if ($p_html_output)
        {
            // Stop output buffering.
            ob_end_clean();
            ob_flush();

            echo "";
            $g_comp_template->display("head.tpl");
            echo "";
        } // if

Please try to fix this issue.

Regards

Alex