Hi Alexandros,

I built Ofelia external on Ubuntu 18.04 LTS and it seems like the binary is incompatible in newer Ubuntu and some other distros.

Maybe you could try something like the following script which I found from this post: https://forum.openframeworks.cc/t/building-executables-that-run-in-the-future-after-updating-shared-libraries/28542

$ sudo ln -s /usr/lib/libGLEW.so /usr/lib/libGLEW.so.2.0

If this doesn't work, I would suggest building the external yourself following the instruction from: https://github.com/cuinjune/ofxOfelia#build-requirements