The download of Darktable via flatpak happens very quickly but I am not sure if it really occurred. When I try to use Darktable I get a message that says;

/home/glen/.var/app/org.darktable.Darktable/config/darktable/data.db
The database lock file contains a pid that seems to be active in your system:2
close darktable

I love the new Darktable 2.6 -2.4 works OK on my machine.
No idea what a pid is or how to deal with it. do I need to reinstall Neon?
Thanks for any help.

What commands or method did you use to install it? What directions did you follow?
https://flathub.org/apps/details/org.da ... .Darktable
Did you go down to the bottom of the page for installation instructions? The 'install' button only downloads a small file, not the entire program.

This might be a useful alternative - this is darktable's PPA for it
https://launchpad.net/~pmjdebruijn/+arc ... le-release

Thanks, Claydoh I will give it a try tomorrow. And yes I did just click on the install button.

https://www.omgubuntu.co.uk/2017/09/aho ... stall-apps