Hello.
Installation fails when password to MySQL ends with symbol "\".
Installation creates file "data/config/config.php" with line:
$_conf['jrCore_db_pass'] = 'somepswd\';
So \' makes syntsax error in config.php.
P.S. I changed my password, but may be someone can't change.
updated by @andrey12352: 04/13/17 07:35:06AM
JAMROOM
