DSM 6.0, rutorrent not starting

[A----]

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Setup

Package Name: rutorrent
Package Version: 3.7-8

NAS Model: DS416j
NAS Architecture: armada38x
DSM version: 6.0

Expected behavior

Clicking open right after install should launch the app.

Actual behavior

It does not. Tried it before installing Webstation but I though it might be a dependency, so I installed it, reinstalled rutorrent, same thing.
Customized open_dir is not checked.
Is there other requirements (apache instead of nginx, …) ?

ps aux | grep rtorrent shows its running, as the interface tells us is does.

Steps to reproduce

1. Install
2. ???
3. Profit!

Package log

Check Package Center or /usr/local/{package}/var/

empty

Other logs

Things that looks like errors in /var/log/synopkg.log_

            Begin:  /bin/tar xf /volume1/@tmp/@synopkg/@download/rutorrent/@SYNOPKG_DOWNLOAD_rutorrent -C /volume1/@tmp/586FA7050 conf --no-same-owner
/bin/tar: conf: Not found in archive
/bin/tar: Exiting with failure status due to previous errors

            Begin:  postinst
/var/packages/rutorrent/scripts/installer: line 78: /etc/php/conf.d/com.synocommunity.packages.rutorrent.ini: No such file or directory
sed: can't read /etc/php/conf.d/user-settings.ini: No such file or directory

[Dr-Bean]

Rutorrent issues with DSM6 is tracked in #2215. Closing as duplicate.