Problems installing PDFView

I'm trying to install PDFView but I can't get it to work. I did at one point see a "Download PDF" link at the bottom of an article I'd just created, but this is no longer displaying - and when it did come up that one time it didn't work. Here's a list of everything I've done; can anyone spot something I've missed?

(1) Unzipped PDFView module to sites/all/modules/
(2) Unzipped TCPDF to sites/all/modules/pdfview/. There were some problems with this - Vista refused to copy some of the files (e.g., "barcode") because they had the same name as a folder in the zip. All of these files had a size of 0KB.
(3) Went in to tcpdf/config/tcpdf_config.php and changed variables:

define ("K_PATH_MAIN", "C:/Program Files/wamp/www/pandj/sites/all/modules/pdfview/tcpdf/");

/**
* url path
*/
define ("K_PATH_URL", "http://localhost/pandj/sites/all/modules/pdfview/tcpdf/");

(4) Enabled PDFView module in Drupal config.
(5) Went in to /user/access/ and gave permission to use PDFView
(6) Went in to /user/roles/ and gave permission there too.
(7) Restarted PHP just to be sure.