10:22:37 Create new PHPExcel object<br />10:22:37 Set document properties<br />10:22:37 Add some data<br />10:22:37 Sum of Range #1 is <br />
<b>Fatal error</b>:  Uncaught Error: Class 'PHPExcel_Calculation_Functions' not found in /home/tyesolutions/public_html/lib/excel/Classes/PHPExcel/Calculation.php:2520
Stack trace:
#0 /home/tyesolutions/public_html/lib/excel/Classes/PHPExcel/Calculation.php(3030): PHPExcel_Calculation-&gt;_showValue('Worksheet!B2')
#1 /home/tyesolutions/public_html/lib/excel/Classes/PHPExcel/Calculation.php(2327): PHPExcel_Calculation-&gt;_processTokenStack(Array, 'B5', Object(PHPExcel_Cell))
#2 /home/tyesolutions/public_html/lib/excel/Classes/PHPExcel/Calculation.php(2164): PHPExcel_Calculation-&gt;_calculateFormulaValue('SUM(B2:B4)', 'B5', Object(PHPExcel_Cell))
#3 /home/tyesolutions/public_html/lib/excel/Classes/PHPExcel/Cell.php(297): PHPExcel_Calculation-&gt;calculateCellValue(Object(PHPExcel_Cell), true)
#4 /home/tyesolutions/public_html/lib/excel/Tests/03formulas.php(65): PHPExcel_Cell-&gt;getCalculatedValue()
#5 {main}
  thrown in <b>/home/tyesolutions/public_html/lib/excel/Classes/PHPExcel/Calculation.php</b> on line <b>2520</b><br />