Hello, When upgrading from 10.1.16 to 10.1.17 on Debian Jessie i've received the following error: aptitude upgrade <snip> dpkg: error processing package mariadb-server-10.1 (--configure): subprocess installed post-installation script returned error exit status 1 Processing triggers for libc-bin (2.19-18+deb8u4) ... Errors were encountered while processing: mariadb-server-10.1 E: Sub-process /usr/bin/dpkg returned an error code (1) Failed to perform requested operation on package. Trying to recover: Setting up mariadb-server-10.1 (10.1.17+maria-1~jessie) ... dpkg: error processing package mariadb-server-10.1 (--configure): subprocess installed post-installation script returned error exit status 1 Errors were encountered while processing: mariadb-server-10.1 Current status: 0 updates [-14] <snip> /var/log/syslog mysqld_safe[44689]: ERROR: 1136 Column count doesn't match value count at row 1 Was able to fix by running. /usr/sbin/mysqld --skip-grant --general-log & And running the upgrade again. See attached full logs.