Hello aug,
The version 2.9.0 was compiled with Ubuntu 20.10 by mistake. They have added a new glibc version in this point upgrade. And then Bforartists does not start anymore at Ubuntu 20.04 since the glibc version does not match. Could you please use the actual version 2.9.3 from the download page? We have corrected this problem in the newest version. This version is compiled at a CentOS with a much lower glibc version number, and should work at nearly every actual Linux distribution 🙂
https://www.bforartists.de/download/
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