Dom PDF Problem

Hey all, I am working with generating PDF using Dom PDF. My problem is when I generate a single PDF , Its working fine. But when I code it in a loop for generating more than one PDF it gives some error. $DomObj = new DOMPDF(); $DomObj->load_html_file($pth); $DomObj->render(); $pdf = $DomObj->output(); file_put_contents($MainDir."/Order-".$rsOrder[$ro]['OrderNumber']."/packing_ slip.pdf", $pdf); the above code is in a loop I come to know that ,there is problem with memory leak. Also I thought that it was because I had not destroy the previously created Object. So I also tried destroying it using unset.. I don't know whether its destroying or not. Error is something like "Fatal error: Uncaught exception 'DOMPDF_Exception' with message 'No block-level parent found. Not good.' in D:\foldername\project\control\dompdf\include\inline_positioner.cls.php:68 Stack trace: #0 D:\foldername\ project \control\dompdf\include\frame_decorator.cls.php(381): Inline_Positioner->position() #1 D:\foldername\ project \control\dompdf\include\inline_frame_reflower.cls.php(56): Frame_Decorator->position("......... Can anyone please give me some way to solve this.