when try to login to roundcube i get this error

Clean Yetiforce with only admin user. I check php settings, and when enable debug, here phpError.log:
[19-Oct-2016 11:28:18 Europe/Amsterdam] PHP Catchable fatal error: session_regenerate_id(): Failed to create(read) session ID: user (path: /var/www/virtual/xxxxx/phptmp) in /var/www/virtual/xxxxx/htdocs/modules/OSSMail/roundcube/program/lib/Roundcube/rcube_session.php on line 436
@barra
have you installed the hotfix? It is in the updates folder and needs to be installed after upgrading to 3.4
@PercyP Yes, hotfix1 was installed.
with php7 i need to update roudncube. For fix:
1- copy /modules/OSSMail/roundcube folder to /modules/OSSMail/roundcube_backup
1- replace content of folder /modules/OSSMail/roundcube with latest release get here: https://github.com/roundcube/roundcubemail
2- copy /modules/OSSMail/roundcube_backup/config/config.inc.php to
/modules/OSSMail/roundcube/config/
3- copy /modules/OSSMail/roundcube_backup/plugins to
/modules/OSSMail/roundcube/plugins
I'm having the same 500 error when attempt to open rouncube on my setup. @barra have you tried this walk around with PHP 5.6 ?
Thanks.
i will try in few days.
@barra Ah php 7 does not currently support ioncube. This is noted and they are currently working for a fix so im afriad you'll have to stick with php 5.6
Error 500 is an error Apache [https://www.prestashop.com/blog/en/the-500-internal-server-error-explained-solved/].
Please check apache logs and please use only php 5.6.