The download takes place via the default webbrowser, so you need to click on the files in the notification bar after the download to get Tasker to install them.
The icons are installed in the directory /sdcard/Tasker/.icn/
,
one sub-directory for each icon set. The directory starts with a .
so that it is ignored by the Gallery application.
To remove them, simply delete the directory.
Sometimes the download is very small and you get an error after clicking it. That problem seems to come from using some proxy servers. In such cases you will need to download and install manually, perhaps on a PC, see User-Installed Icons below.
You can also install your own icons directly into Tasker's icon directory
/sdcard/Tasker/.icn/
. Make sure the icons are in a subdirectory.
The subdirectory should also only be one level deep (no subsubdirectories).
Icons must be in PNG format and the recommended size is 48x48 pixels for low-density screens e.g. G1, Hero and 72x72 pixels for high-density screens e.g. Nexus, Droid.