I recently installed the new version of elementary and when trying to install a program in AppCenter the whole program would not install the app. I have never seen this happen in elementary and I have used it a few years ago and it was more stable. Also one update today would not update in AppCenter. Had to use terminal. Is there a bug? Should I use the terminal instead for installing apps?
I'm tried to install another app, Etcher and it won't install. I installed gdebi from the terminal and when I tried to install Google Chrome with gdebi it crashes. This is the most unstable version of elementary OS I've used. Time to go back to anther distro with less problems.
I sometimes have issues with Etcher, if you got a windows machine and for a last attempt try LinuxLiveUSb Creator always works for me when the others don't.