I just followed the installation instruction of roundcube.
I have configured the syno again from scratch and installed the syno mailpackage.
This works fine.
Now i tried to upgrade with the roundcube 0.4.1 release as you told in the map /web/rcmail.
After executing the installer step1 was OK but step 2 gives error on:
Check if directories are writable
Roundcube may need to write/save files into these directories
Check DB config
DSN (write): NOT OK(MDB2 Error: connect failed)
Make sure that the configured database exists and that the user has write privileges
I tried it with the syno mailpackage active and inactive, mysql/pgsql - i get always this error.
Has somebody a manual or script to complete such an upgrade.