Hi Kovali,
Can you try updating the examples to have ../../ instead of ../../../ (remove one of the ../). That error is because the plugin is expecting itself to be in /plugins/createPDF/examples/.
Anyways, the approach I'd suggest is to get a simple page working and then work from there. So if either the "Test Server Requirements" or the examples generate a PDF than you know PDF generation is working.
So for the next step I'd recommend creating a copy of pandenDetail.php such as pandenDetail_test.php and removing large blocks of the HTML code until you can find the HTML/CSS that is causing the PDF generation to fail. PDFs can be a bit more picky then a regular web page about coding.
If you want a hand with it feel free to email me FTP login details to dave@interactivetools.com and I can take a look at that page (email, don't post login details to the forum).
Hope that helps!
Dave Edis - Senior Developer
interactivetools.com