According to the official website, the software shouldn't have any problems in running on 64-bit machines and it's fully compatible with Windows Server 2008. This might be an internal error of the software. To fix it, you need to be sure that you properly installed and configured your printer since it's a printer error that you receive. Also, you can try downloading and installing the latest version of the software. If you still encounter the error, you should contact the developer on the following website for further assistance.