Hi
I had a B2 Multiblog installed there : https://clubtbn.fr/ambre (version 6.6.7 if I remember well ... was a 6.6 for sure)
I tried an automatic upgrade and I get a memory error, so I decided to make a manual upgrade, I followed the instructions from the manual, and when I get to the installation script, one part (where I input sql server, database infos etc ...) is missing !
Here is a screenshot : http://www.clubtbn.fr/images/b2.png
I tried to de-activate all script/adblocker, I tried another browser .... always the same result.
And I tried to install B2 on another host, and I get all the installation page with the setup part .... I don't understand why.
(ps: sorry for my poor english ... but I'm french :p)
Your has a fatal error right in the middle but it is not displayed. So you only see white space.
You need to either enable display of fatal errors on you web host (Who is your web Host?)
Or you need to look at the PHP log files provided by your web host to see the error.
You should restore a backup of your previous version and check in b&ckoffice > system status how much memory you have for PHP.