Hello Dmitry,
Sorry for late reply to this,
Actually my colleague have mentioned above, if you using that
Updater update the Easyblog from version 3.8.xxx to latest version 3.9.xxx, that is doesn't work, that
Updater only work from version 3.9.xxx update to latest version 3.9.xx or 4.0 above. So you can download the Easyblog latest version zip file from your dashboard
http://stackideas.com/dashboard .
Hope this help.