Check if you are currently running another software management tool, e.g. Synaptic or aptitude. Only one tool is allowed to make changes at a time.
Thoir sùil a bheil thu a' ruith inneal stiùireadh bathar-bog eile an-dràsta, m.e. Synaptic no Aptitude. Chan fhaod ach aon inneal rudan atharrachadh aig an aon àm.