Problem running examples on Linux

I’m new to SuperCollider and wanted to try out the examples. I’m on Linux Arch.
The IDE (v3.13.0) starts up without a problem and the server is started:

compile done
localhost : setting clientID to 0.
internal : setting clientID to 0.
Couldn't set realtime scheduling priority 1: Operation not permitted
Class tree inited in 0.01 seconds

*** Welcome to SuperCollider 3.13.0. *** For help press Ctrl-D.
Couldn't set realtime scheduling priority 1: Operation not permitted
SCDoc: Indexing help-files...
SCDoc: Indexed 1374 documents in 0.74 seconds
Booting server 'localhost' on address
JackDriver: client name is 'SuperCollider'
SC_AudioDriver: sample rate = 48000.000000, driver's block size = 1024
JackDriver: connected  system:capture_1 to SuperCollider:in_1
JackDriver: connected  system:capture_2 to SuperCollider:in_2
JackDriver: connected  SuperCollider:out_1 to system:playback_1
JackDriver: connected  SuperCollider:out_2 to system:playback_2
SuperCollider 3 server ready.
JackDriver: max output latency 42.7 ms
Requested notification messages from server 'localhost'
localhost: server process's maxLogins (1) matches with my options.
localhost: keeping clientID (0) as confirmed by server process.
Shared memory server interface initialized

Simple example from the website (like Simple FM, Drummer, Chainsaw) are running fine and I hear a sound.
But when I try “Gabber Rave” or other from the Git Repo I get the Error:

ERROR: syntax error, unexpected '(', expecting end of file
  in interpreted text
  line 32 char 1:

  var durations;
ERROR: Command line parse failed

There is no other information, also no debugging messages from the Terminal.
I’ve read here something about the buffer length, but from the comments it should be limited to Windows.

Any suggestions, or do I miss something ?

Not specifically about the evaluation problem, but, in Linux, it’s strongly recommended to add your user to the “audio” group. How do I configure my linux system to allow JACK to use realtime scheduling? | JACK Audio Connection Kit

(Unfortunately, in Linux, the out-of-the-box audio setup is usually not adequate for professional-grade apps like SC. Once you’ve got it set up, it doesn’t need to be redone until the next OS install. But it does take a bit of reading and doing. If Pipewire becomes ubiquitous, it could reduce this burden; for now, it does take some manual configuration.)


Thank you, that fixed the real time topic.

Meanwhile, I managed to get the example running.
I had to evaluate each group/region by itself and one after another, then it was running.
Coming from C/C++ programming, I thought “Evaluate File” will just compile and run the whole file and handle dependencies … Ok, something learned