Linux users are being penalised points. I don't like spending time fixing your sh*t.
fc-list: /home/blahblah/slots/10/libz.so.1: version `ZLIB_1.2.9' not found (required by /usr/lib/libpng16.so.16)

Is this a work around? Since each project json starts with the zip file
In the project rnma.xyz folder, create a link to /usr/lib64/libz.so.1
in the project folder, app.1.06 zip rename the libz.so.1.old
add the libz link to the zip file

in each slot (and I have quite a few) - for every slot
rename the libz.so.1.old
create a link to /usr/lib64/libz.so.1

How about it? Does this work? If it doesn't I won't be using your fckn broken app. Otherwise fix your own broken sh*t.

the message

fc-list: /var/lib/boinc-client/slots/3/libz.so.1: version `ZLIB_1.2.9' not found (required by /lib/x86_64-linux-gnu/libpng16.so.16)

still exists
maybe an update is neccesary?
on my system it looks like there is a newer libz.so.1 version libz.so.1.2.11 installed

ll /usr/lib/x86_64-linux-gnu/libz.so.1
lrwxrwxrwx 1 root root 14 Mai 16 19:11 /usr/lib/x86_64-linux-gnu/libz.so.1 -> libz.so.1.2.11

in app.1.22.zip file the libz.so.1 is from 21. Jan 2020
and the system libz.so.1 is from 14. Okt 2022
also my system libpng16.so.16 is from 24. Mar 2022 (libpng16.so.16.37.0)

On the other hand it looks like the message does not affect the calculation, because I have valid results with the message too.

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Matthias