Error using domPDF 1.5.1

[eluser]Zola[/eluser]
Hello, am a new code Igniter programmer. Am getting its structure very well and i am almost done with my project. Am trying to create reports in PDF and i've seen all the forums regarding this. I have downloaded domPDF 1.5.1 and getting an error like:

Fatal error: Call to undefined method DOMText::getAttribute() in \plugins\dompdf\include\cellmap.cls.php

I've checked the cellmap/cls.php class and there is no such method, could anyone help me out with this.

Regards,

Bicos