hi guys.

yesterday by mistake i deleted all my kernels but finaly got my system back with boot repair....the thing is that i have problem opening muon pack. manager,muon update and muon soft. center by this problem "Opening configuration file /etc/apt/apt.conf.d/00trustcdrom - ifstream::ifstream (13: Permission denied)"....any idea how to fix this?....thx in advanced and apologize for bad english.

(i can run muon by terminal with "sudo muon" btw)

Please provide the output of the following command:

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ls -lR /etc/apt/

There already was an update of the Muon package in Kubuntu 13.10 fixing this bug, please make sure to upgrade. You can do this on the command line with the following command:

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sudo apt-get update && sudo apt-get upgrade