I just did a fresh install of OSMC 2017.8.-1 on my ATV1.
When using the MyOSMC app store to install Samba, it doesn’t work.
No response at all when you select samba server for installation and click Apply.
I CAN successfully install Samba Server via cli with:
sudo apt-get install smb-app-osmc
But the app store gui doesn’t work.