We highly recommend that you update your SendPress plugin to version 0.8.8.1, which came out yesterday. It includes several bug fixes and our first translation file.
Updated issues in 0.8.8.1
- Uninstall file error fixed.
- Security check added to all files
- DB Error on unistall and reinstall
- Active Subscribers bug in WordPress 3.5 fixed
- Spanish Translation added
- Remove all subscribers from list added
- PHP 5.2 bug fixed
If you have an issue to submit please use the WordPress forums at: http://wordpress.org/support/plugin/sendpress/
To add a translation for SendPress join our Transifex team.