Trouble with picoreplayer first setup

I must be doing something wrong!

I downloaded picoreplayer 6.1 to an SD card & put it in my new Pi 4. Then I:

expanded the file system
by ssh I created /home/tc/music
installed LMS, Samba, enabled bluetooth
set samba to share /home/tc/music
copied a few dozen tracks to that folder to test
Selected the music folder from the LMS webpage
deselected several plugins, and selected a few more

it all appeared to work.
I noticed odd repsonses when applying some settings:
"backing up files to ...mydata.tgz and then a never ending, growing, string of non-text symbols/characters. Something not right?

After a reboot, LMS does not start.
clicking "start LMS" says it's successful, but LMS then shuts straight down again

The log shows:

[20-09-04 12:47:44.1643] main::init (387) Starting Logitech Media Server (v7.9.3, 1597753178, Sun Aug 23 19:27:27 CEST 2020) perl 5.028002 - arm-linux-gnueabihf-thread-multi-64int
[20-09-04 12:47:45.3570] Slim::Utils::Misc::msg (1255) Warning: [12:47:45.3565] private subdirectory /tmp/par-7463 is unsafe (please remove it and retry your operation) at /usr/local/slimserver/CPAN/PAR/SetupTemp.pm line 120.
[20-09-04 12:47:45.3573] PAR::SetupTemp::set_par_temp_env (52) Warning: unable to create cache directory at /usr/local/slimserver/CPAN/PAR/SetupTemp.pm line 52.


edit: I cleared the LMS cache and LMS has restarted.. maybe it's ok now!