Magento error: Fatal error: Call to undefined method

Magento errors during product import:

"Fatal error: Call to undefined method Mage_Adminhtml_Block_Abstract: getexceptions () in appcodecoreMageAdminhtmlBlockSystemConvertProfileRun. php on line 167"
The current Magento version Magento1.5.1.

Solution:

Find the file "appcodecoreMageAdminhtmlBlockSystemConvertProfileRun. php"

Comment out #167-#168 rows, like

// If (! Is_null (parent: getExceptions ()))
// Return parent: getExceptions ();
Comment out #197 rows,

// Parent: setExceptions ($ exceptions );
Save and re-import the Magento product. The error message disappears.