I can confirm the problem,
I can't install Joomla 3.5 Beta4

PHP 5.5.15
MySQL 5.6.20
Apache/2.4.10

Worked fine here.
Successfully installed the 3.5 beta 4 earlier today (used the zip download)

PHP 7.0.3
MySQL 5.6.28

Guys can you just confirm are you updating via Extension Manager or via Joomla Update (Testing Channel). I'm aware of some 500 errors when updating through Extension Manager - which I'm investigating - am not aware of anything with Joomla Update

I tested with the tar.gz, but also with the zip I have the same problem

Hi wilsonge, the tracker is a about a fresh new install, not an update.

i think this is for a clean install of 3.5.0 beta4

Ty. I could do it when i packed the beta last night - but will try and set up something with your PHP/MySQL configuration and see what I can do!

i used latest staging and installed correctly.

Database Version 5.5.5-10.0.24-MariaDB
Database Collation utf8_general_ci
Database Connection Collation utf8mb4_general_ci
PHP Version 5.6.18

Note that if i don't have a database created before install, the install process blocked at step 2.
But if we have a database created before install and use it on install it worked fine.

@stellainformatica @AlexRed did you create a new database on install or do you have the database created before install?

YES that is a change with 3.5beta4 - you must have a database already
created

On 7 March 2016 at 11:43, andrepereiradasilva notifications@github.com
wrote:

i used latest staging and installed correctly.

Database Version 5.5.5-10.0.24-MariaDB
Database Collation utf8_general_ci
Database Connection Collation utf8mb4_general_ci
PHP Version 5.6.18

Note that if i don't have a database created before install, the install
process blocked at step 2.
But if we have a database created before install and use it on install it
worked fine.

@stellainformatica https://github.com/stellainformatica @AlexRed
https://github.com/AlexRed did you create a new database on install or
do you have it created before?

—
Reply to this email directly or view it on GitHub
#9326 (comment).

Brian Teeman
Co-founder Joomla! and OpenSourceMatters Inc.
http://brian.teeman.net/

OK - we need to fix that. I installed earlier creating the database during install and it's certainly not intended :/

probably it was introduced here 0652e05

$collation var doesn't exist ... https://github.com/joomla/joomla-cms/blob/0652e05cf820879ebb252baac9dc4dd805064780/libraries/joomla/database/driver.php#L858

i think you forget to copy it when merging @wilsonge
See https://github.com/joomla/joomla-cms/pull/9311/files#diff-75c0b0b456cd757b4e1376ce8821682cR857

Database Version 5.7.9
Database Collation utf8_general_ci
Database Connection Collation utf8mb4_general_ci
PHP Version 7.0.2
I confirm that it's mandatory to create the database prior to installation in this version.

i can confirm that adding the line (https://github.com/joomla/joomla-cms/pull/9311/files#diff-75c0b0b456cd757b4e1376ce8821682cR857) solves the problems @wilsonge

and the database is created with utf8mb4_unicode_ci collation as it should be

See #9328

Closing as we have a PR #9328