If the ExpertSDR3 software cannot be started in Linux Debian 12, Ubuntu 22.04/ Ubuntu 24.04 and Linux Mint 21.03:
To solve this problem, you need to install the libxcb-cursor0 library!
Open a terminal and run the command:
sudo apt install libxcb-cursor0
Alternative for Linux newcomers:
Open the Program/System box in Ubuntu or Linux Mint.
Open the program Synaptic (if it is missing, install it additionally via the application manager).
Start Synaptic and search for libxcb-cursor0.
Click and apply.
My SunSDRpro 2 is working successfully again with ExpertSDR3 1.0.7 beta Linux x64 in Linux Mint 21.3.
I hope the information is helpful for you.