When Docdata sends updates to your Kartris site, it only sends the order ID. The web site is then required to send a request to see the updated status information for the order. The problem is that this requires the payment cluster key. In order to make this work, we therefore have an Access db within the plugin that stores cluster keys against the order ID when an order is first created, and this is then queried later when we need to find the cluster key using the order ID which Docdata sends us.

So there are a couple of things you need to ensure when setting up your site. Firstly, that the Docdata plugin folder is full permissions for the web site account, in order that it can write data to the Access db. Secondly, the site needs to run 32-bit, as it relies on 32-bit Access drivers. You can set this from IIS; find the application pool that the site is running in, view the Advanced Settings for it, and set 'Enable 32-bit Applications' to TRUE.