[Icecast] IceS segmentation fault

[Kit]

I get a segmentation fault when starting the IceS encoder on a Linux-based QNAP NAS.

I'm trying to set up IceS to stream an ALSA input to Icecast. Icecast works well and confirms when I stream using other things to it. However IceS hits a segmentation fault immediately after starting the encoder.
The IceS log is:

[~] # sudo ices /etc/ices.xml
[2020-05-11  19:24:34] INFO ices-core/main IceS 2.0.2 started...
[2020-05-11  19:24:34] INFO input-alsa/alsa_open_module Opened audio device hw:0,0
[2020-05-11  19:24:34] INFO input-alsa/alsa_open_module using 2 channel(s), 48000 Hz, buffer 341 ms 
[2020-05-11  19:24:34] INFO input-alsa/alsa_open_module Starting metadata update thread
[2020-05-11  19:24:34] INFO signals/signal_usr1_handler Metadata update requested
[2020-05-11  19:24:34] INFO encode/encode_initialise Encoder initialising with bitrate management: 2 channels, 48000 Hz, minimum bitrate 256000, nominal 320000, maximum 320000
Segmentation fault
The IceS config file looks like this:

<?xml version="1.0"?>
<ices>

<background>0</background>
<logpath>/share/4a Downloads temporary</logpath>
<logfile>ices.log</logfile>
<logsize>10000</logsize>
<loglevel>4</loglevel>
<consolelog>1</consolelog>
<!-- <pidfile>/share/4a Downloads temporary/ices.pid</pidfile> -->

<stream>
        <metadata>
                <name>Roon</name>
                <genre>Avant-garde</genre>
                <description>Roon Icecast stream</description>
        </metadata>

        <input>
        <module>alsa</module>
                <param name="rate">48000</param>
                <param name="channels">2</param>
                <param name="device">hw:0</param>
                <param name="periods">2</param>
                <param name="buffer-time">1000</param>
                <!-- <param name="metadata">1</param>
                <param name="metadatafilename">/home/ices/metadata</param> -->
        </input>

        <instance>
                <hostname>localhost</hostname>
                <port>8000</port>
                <password>mirror</password>
                <mount>/test.ogg</mount>
                <encode>
                        <quality>10</quality>-->
                        <nominal-bitrate>320000</nominal-bitrate>
                        <maximum-bitrate>320000</maximum-bitrate>
                        <minimum-bitrate>256000</minimum-bitrate>-->
                        <managed>1</managed>
                        <samplerate>48000</samplerate>
                        <channels>2</channels>
                        <flush-samples>48000</flush-samples>
                </encode>
        </instance>
</stream>

</ices>
I've changed nearly every parameter in it to see if I can get round it, but all I am able to achieve is causing a crash sooner than the segfault. I've also got no more logging than this - level 4 is max anyway - so I can only assume the fault is in the encoder. libvorbis and libogg are both installed. I don't know of any way to use an external encoder or I'd be using that... can anyone help with what might be causing this segfault?

Thanks!



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