CiviCRM Community Forums (archive)

I am trying to use the Payflow link extension. Which is super exciting that there is one, btw! It took me a while to figure out how to install it to begin with, but I added an extension directory and then easily got it installed.  When I try to use it as a payment processor I get a PHP fatal error:

PHP Fatal error:  require_once() [<a href='function.require'>function.require</a>]: Failed opening required '/home/public_html/mysite/wp-content/plugins/civicrm_extensions/nz.co.fuzion.payflowlink/Payflow Link.php' (include_path='.://home/public_html/mysite/wp-content/plugins/civicrm/civicrm/:/home/public_html/mysite/wp-content/plugins/civicrm/civicrm//packages:.:/usr/lib64/php:/usr/lib/php:/usr/share/pear') in /home/public_html/mysite/wp-content/plugins/civicrm/civicrm/CRM/Core/Payment.php on line 99

Is this because I did not properly list my extensions directory? Should it be an http:// address instead? Or is something else entirely wrong?

I was concerned it might be my credentials as I wasn't entirely sure what belonged in the 'Merchant ID' and 'Key' fields but I didn't think they would be causing a PHP error. (And one forum post did say to use my username and password and that's what I have in there).