G'Day from Australia,
I'm the guy who created the new Raspberry Pi Release station image with help from my colleagues. More information from
PaperCut KB | Run a PaperCut NG or MF Release Station from a Raspberry Pi
To answer @Oaktech's question. We have been very nervous about providing support for the Pi as it's not a tier 1 platform for us.
However after lots of requests from customers (and a bit of pushing from me) our support team agreed that making a pre-built image available would probably work. So that's now what we do, but I'm still building the images by hand each release. The May release of Raspian had me jumping through hoops this time because of the disk auto-resizing, but I hope to be pushing a new 16.1 image in the next couple of days.
Once I get all the wrinkles sorted in the image creation we hopefully can automate the whole process and they will drop out the end of the build. However because we are shipping Raspian as well there are additional issues, so it's not straightforward.
If you use my build then I've added the ability to configure the release station from a desktop workstation (config files are linked from /boot) which makes life easier. I've also provided a note on the above article on how to provide a custom image in the /boot partition.
To return to the instructions from @CAWJames, you don't need to copy over the JVM because you need to run the ARM JVM supplied in Raspian. Make sure you install the correct JVM version as we upgraded to Java 8 a few months ago.
I'm happy to answer more questions, so fire away.
Cheers
Alec