Make sure you didn't remove the following from the gaz_html_footer template:
Code:
<if condition="$issue['htmltracker']"><img src="$vboptions[bburl]/geek/gaz/includes/gaz_clear.php?u=$user[userid]&i=$issue[id]&d=$user[senddate]" border="0" width="1px" height="1px" alt="" /></if>
Also make sure that the gaz_clear.php file is inside your /forum/geek/
gaz
/includes directory and please note that the * doesn't show until prunedtrack is 1 and this is done via the compress_track_count function in the gaz_track_cron.php file, which isn't an immediate update, so you'd see ~ instead.