Upgrade 1.2.11 to 1.2.12 broken

Hallo,

I tried to update from 1.2.11 to 1.2.12 and all I got was a Error during requirements check:
2016-02-23_21h38_38.png

No idea what is down at the moment but admin panel and all webpages are not available. Seems like update uninstalled my Mariadb. Can anyone please help me?

Distro: Ubuntu Server LTS 14.04
Codname: sry no idea what info you need here (Ubutnu 14.04 Codename: 14.04.4 LTS, Trusty Tahr)
MariaDb: I installed with I-MSCP the version 10 but no idea what version number it was in detail

(Teamviewer available if needed)

I installed mariadb manual and did I-MSCP installer again: (After installing mariadb it seems all worked again)
2016-02-23_21h58_41.png
Translated: Preparing to remove mariadb-server10.0 completely.

Update:
I checked it more than twice, the 1.2.11 installer works fine for me, 1.2.12 uninstalls mariadb everytime I call the installer.

Quote from Nuxwin

@UncleSam

In the package file for Trusty,try to add <package>mysql-common</package> into the mariadb 10.0 section and run the installer again.

See https://github.com/i-MSCP/imsc…/packages-trusty.xml#L137

Installation worked now for me - thanks for your help.

Quote from Nuxwin

PLease, don'r run 1.2.11 installer if you have run the 1.2.12 installer (downgrading is not supported). I need some minutes to try with trusty and mariadb 10.0

Yes I know this and I had a backup of everything. But it seemd to be safe if the problem was at "Checking requirements" section.