We currently have CiviCRM 4.4.6 installed with Drupal 7.36. Our version of CiviDiscount is 2.5.
Our issue is as stated in the title. Our discount codes stop working after about a day. It will start giving us fatal errors, the most recent being "/civi_extensions/org.civicrm.module.cividiscount/cividiscount.php on line 848".
If we delete the offending discount code and replace it either with the same code or a new one, it will work for a brief period before doing the same thing. This is becoming problematic as we have quite a few upcoming events that need discounts applied to them.
I'm not sure if this is a bug or related to the amount of discount codes we have in the system (~65).
It should be noted that we are in the process of upgrading to CiviCRM 4.7 and have a dev site up, however I haven't had a chance to see if 2.5 is a problem on that installation as well. We'll ideally be upgrading CiviDiscount to the latest version for CiviCRM 4.7, but until then, I need a solution to our current installation.