Tracker Applet- There was an error while performing indexing

Once it's opened, click on Check, type in your administrator's password, wait until it checks for new packages (if any), then click Update.

Alternatively, you can use the Terminal application to update your packages (click on Applications menu, then under Accessories sub-menu click on Terminal):

Once it's opened, type the following to check for updates:

sudo apt-get update

When prompted, type in your administrator's password. Once it's finished, type the following to install the updates:

sudo apt-get upgrade

Just wait until it finishes and then try to reproduce the tracker's error.

The system is up to date

If your system is up to date and the problem persist, then we're going to install the tracker-utils package (if not installed) and then reset the tracker process. To install the tracker-utils package, open the Terminal (click on Applications menu, then under Accessories sub-menu click on Terminal). And type:

sudo apt-get install tracker-utils

When prompted, type in your administrator's password. Once it's finished, type the following to reset the tracker process:

tracker-processes -r

And this should fix the problem. Let me know if you need any further help.

Regards,

Gilberto