Just did a new, clean setup following
https://www.filebot.net/forums/viewtopic.php?f=3&t=1802

After installing Unofficial Java installer a got an error:

/var/packages/oracle-java-installer/scripts/postinst: line 10: /usr/local/bin/java: No such filer or directory

Probably that's where trouble ...

It seems like 'node' is installed in '/usr/local/bin' instead of /'usr/bin'
i copied the file to /usr/bin manually but still some errors...

I have exactly the same error:

Synology DS214play DSM 6.0-7274
Node.js 0.12.9-0159
Filebot 4.6.1
FileNode 0.1.8
Java: java version "1.8.0_73"
Java(TM) SE Embedded Runtime Environment (build 1.8.0_73-b02, headless)
Java HotSpot(TM) Embedded Client VM (build 25.73-b02, mixed mode)

Seems like node.js ...