I've been playing with Apophysis and love it, and I'm in such a distracted mood that it's taken forever to post a question about a problem that's been plaguing some of my flames.

I've done a few different renders for a series I've dubbed Ghostweb (for some reason) - I've tried using the editor and changing things slightly, but I keep getting a 'gap' I guess running down towards the centre. I'll post a file to demonstrate.

It's no biggie, just wondering if its something glaringly obvious