preg_match(): Unknown modifier 'r'

This has been happening for a while, this is just the latest error I have received:

warning: preg_match() [function.preg-match]: Unknown modifier 'v' in /home/drupal_5x_prd_01/sites/all/modules/feedburner/feedburner.admin.inc on line 425.

This has been happening for a while, this is just the latest error I have received:

warning: preg_match() [function.preg-match]: Unknown modifier 'v' in /sites/all/modules/feedburner/feedburner.admin.inc on line 425.

I found that the code as written fails sometimes when you have forwards slashes in the Feedburner path (field "Feedburner feed"). Since the code uses regular expressions, it's clear that the forward slashes aren't being escaped properly before they're sent to the regular expression parser.

Starting at line 419 in feedburner.admin.inc update the code to look like this:

      // need to escape the forward slashes so not to mess up the regexps
      $fb_uri_esc = str_replace( '/', '\/', $fb_uri );

      // FeedFlare detection
      if (preg_match('/feedflare/i', $fb_request->data) && preg_match('/~f\/'. $fb_uri_esc .'/i', $fb_request->data)) {
        $feed['feedflare'] = true;
      }

      // Ad Network detection
      if (preg_match('/~a\/'. $fb_uri_esc .'/i', $fb_request->data)) {
        $feed['ad_network'] = true;
      }

Inventor Spot is a Drupal site.

Hey this is the maintainer, Dave here. Sorry I haven't had a while to reply to any issues. I'm going to be coding tonight and tomorrow night and get this committed asap. Thanks you furmans for helping figure out what was wrong.

Ok this should be fixed in the new 5.x-1.x version that the Drupal website should be creating in a couple of hours or so. Please let me know if this issue is resolved for you. Sorry it took so long!

Thanks! This fixed it for my site.

Inventorspot is a Drupal site