Chart Legend no showing

Hard to tell what might be wrong without seeing your application. Post your application to Demo Account and open a ticket at http://support.xlinesoft.com sending your Demo Account URL. 'Demo Account' button can be found on the last screen in the program.

Here is what they found out:
thank you for pointing me to this bug.

We'll fix it in the next update.
To fix this issue open PHPRunner5.2/source/classes/charts.php file, find this line:

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$this->arrDataLabels[]=$this->chart_xmlencode($this->chrt_array['parameters'][$i]['label']);

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and replace it with this one:

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$this->arrDataLabels[]=$this->chart_xmlencode($this->chrt_array['parameters'][$i]['name']);

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Then open and rebuild project.