Today I tried to do an online update, and packages couldn’t install. I figured since it’s about time I moved on to Leap 15.1, I would install that, and everything would be fine. Well, the same thing happened during the installation. Remembering a weird problem I had in the past due to dust in the SATA connectors and / or cables, I blasted out the dust. To my relief, the installation went just fine! This makes the second time dust has caused serious problems. So, keep your computer clean, including the cable ends and connectors!