Re: Cannot find a webfilter profile in GUI
I'm assuming you want to remove "custom1" and "custom2" default local category. I don't know why we can't remove the sniffer profile, but you don't have to. Just remove the entries referring category 140 and 141 in the sniffer profile.
With my 5.6.4, they're entry #88 and 89 under config ftgd-wf -> config filters. Just delete those and you should be able to remove custom1 and custom1 categories.