Test whether Chromium now has everything it needs to run.
Change into the Custom Partition directory on the thin client: cd /custom/chromium-browser
Run Chromium: ./usr/lib/chromium-browser/chromium-browser
You will see this error message:
/usr/lib/chromium-browser/chromium-browser: error while loading shared libraries: libffmpeg.so: cannot open shared object file: No such file or directory
It seems Libatomic is no longer a problem, but now Chromium needs a further library: libffmpeg.so