panel applets - Can't install app from usc nor using teminal !! 16.04 LTS - Ask Ubuntu


i'm newbie here , i've got error installing applets ubuntu software center shows app's icon in launcher doesn't install! internet connection active can't update 'other resources' because gives me internet connection error after taking long time loading.

screenshots:

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you can remove cdrom undoing selection did before in software & updates > other software.

also remove offending file:

sudo rm /etc/apt/apt.conf.d/20auto-upgrades.ucf-dist

now should able download , install updates , other software.


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