Unity lenses are all empty

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http://askubuntu.com – My dash is completely empty. The alt-f2 run screen load applications if I type in the commands. But the others are completely empty on my own profile. In a guest profile, they work as expected. I've read the other similar questions and tried both of these options. Neither had any effect: apt-get install --reinstall unity-lens-applications unity-lens-files unity-lens-music unity --reset I've upgraded from 10.14 to 12.04 and the lens / dash has never worked. What could be left over in my home directory from a previous version that would mean these lenses are empty? (HowTos)