Pdfview - blank page - No CCK support

I tryed to install the pdfview.module but only get a blank page in Firefox. Safari tells something about "(NSURLErrorDomain:-1005)".

I think I installed everything correct, but I an not sure with the two Paths:
(Drupal is installed in a subfolder named "cms".)

define ("K_PATH_MAIN", "/var/webs/www.XXXXXXXXX.com/public_html/cms/modules/pdfview/tcpdf/");
define ("K_PATH_URL", "http://www.XXXXXXXXX.com/cms/modules/pdfview/tcpdf/");

Can anybody tell me if these are correct? > In my phpinfo.php I found this:
DOCUMENT_ROOT /var/webs/www.XXXXXXXXX.com/public_html
(I know its different on different hosts)

I use Drupal 4.7, pdfview.module,v 1.28.2.5, tcpdf_1_53_0_TC024

Thanks for any Tips.