Well piCore for a rpi B+ and rpi2 are working.
Extensions loaded and tested.....scanned my musing library and is playing music to a player. I have not tried to download 3rd party apps or anything funny, but it should all work, as the only place it writes is the Cache folder and the prefs folder.
Cache and prefs is defaulted to being created at $TCEDIR/slimserver/....... this is a persistent device
Logs is created at /var/log/slimserver and is not persistent.
slimserver runs as a daemon with default ownership as tc.staff,
if you would like to change anything, you can make a copy of /usr/local/etc/init.d/slimserver and make changes and then back that up with filetool.sh.....
perl-5.20.3.tcz and slimserver.tcz extensions are here
https://www.dropbox.com/sh/qj0hrk42tiepokl/AAApIaR9_mpmmHor0SZPPGhZa?dl=0Please test and give me some feedback with the setup