I have a problem with installing apps from a debian. I open a .deb file in Ubuntu Software and click the "Install" button. for a few seconds it seems to work, with the meter on the install button appearing and rising normally for a split second. then the meter suddenly disappears and the Install button becomes live again and nothing seems to have happened. I click it in rapid sucession, and this app called "waiting to install" appears and it does absolutely nothing after that. So, how do I install a Debian properly!? error: Detailed errors from the package manager follow:
do not know how to install app in state unknown