Ubuntu – All Applications Disappear in the Dash

searchshortcutsunity-dash

After installing the latest update, all my applications disappear in the dash?

It always show me : Sorry, there is noting that matches yours search.

enter image description here

Why? How to fix it?

Thank you for your help.

Run
rm ~/.cache/software-center -R and then : open the terminal hit Alt-F2
run the following command unity --reset

None of these fixes worked for me. But after more searching:

rm ~/.cache/software-center -R

worked like a charm. I did need to run:

unity --reset &

afterwards though, for the changes to take effect within dash, but the software center just started working straightaway.

From terminal run sudo updatedb.