Releasing ImpressPages CMS 2.6
Sorry for the bug that we noticed too late (when releasing v2.5) and for all inconvenience you may experience.
The automated updated was a bit buggy. To fix it you should manually remove "file/tmp/update" folder and then click "Start update" for "Administrator -> System" tab.
IMPORTANT! file/tmp folder must be kept in place.
In addition, there was a bug for dragging already created widgets within the blocks. It's fixed, too.