I have php 5.3.17 on my installation

Parse error: syntax error, unexpected '[' in /srv/www/vhosts/dev-sondage.cspq.qc/application/models/QuestionGroup.php on line 75

Replace
public function attributeLabels()
{
return [
'language' => gt('Language'),
'group_name' => gt('Group name')
];
}

by
public function attributeLabels()
{
return array (
'language' => gt('Language'),
'group_name' => gt('Group name')
);
}

Hey Drogu02,

thank you for your report, they are always very appreciated.
You can also use the bug tracker rather than the forum, so it's easier for us to organize debugging :
bugs.limesurvey.org/my_view_page.php

You even offer a valid fix for it, so don't hesitate to submit a Pull Request to the Git Repository :
github.com/LimeSurvey/LimeSurvey/
help.github.com/articles/using-pull-requests/