Hello
I've the same problem.
Since several months i've tried to achieve the Plesk Version 12.0.18 from Version 11.5 in order to update my CentOS-Box 6.5 to Version 7.
Nothing helped !!
After the upgrade from Plesk Version 11.5 to 12.0.018 (by using the Plesk Web-GUI) I tried to login in the new...