I just recently upgraded to Catalina (MacOs) version 10.15.7. Although Mac accept dt as 64 bit program. Opening the original dt which was installed on 6 mar 2019 shows the jumping logo, but that's all. I am not sure which dt version that is. I threw this version into the bin and installed "darktable-4.2.0_x86_64.dmg", but to no avail.
I found a discussion that was started somewhere in 2019 giving a workaround through terminal and command:
/Applications/darktable.app/Contents/MacOS/darktable
but that didn't work either not for the 2019 installed version en not for 4.2.0, so I am at a loss.
Any solution how to solve this?