Hi all, I hope your St. Valentine's day was great So was ours. Finally we got rid of that annoying compatibility error during upgrade. Now you should not have any issues with the admin login after upgrade, MySQLi works fine now. The new version has some improvements for tree field and a dozen of general improvements. Here is the changelog: Details can be found here: http://dev.subrion.org/versions/159 & Github issue tracker Patch has been released. It could be applied via admin dashboard auto update. Upgrade instructions: 1. Backup your both database & files 2. Go to admin dashboard and you can see a notice on top right of your page 3. Follow the upgrade instructions - that's it. Upgrade is compatible with all packages / plugins / templates that have been released for 4.0.4 version. Do let us know if you have any questions. Thanks!