[SpinyMan]

Hi,
open "customer/home.tpl" file and find a string

{if $active_modules.Bestsellers ne "" and $config.Bestsellers.bestsellers_menu eq "Y"}
{ include file="modules/Bestsellers/menu_bestsellers.tpl" }
{/if}

and replace it by

{if $active_modules.Bestsellers ne "" and $config.Bestsellers.bestsellers_menu eq "Y" and ($main ne "catalog" or $cat ne "")}
{ include file="modules/Bestsellers/menu_bestsellers.tpl" }
{/if}