Error on group updates

[Chook Fowler]

I have received this error which resulted in NewsLeecher crashing.
I have no idea what this even means as I have NEVER seen this before.
I'm assuming updating multiple virtual groups containing multiple groups is not a good idea.
I normally run with 10 concurrent bots but the groups still only usually check for updates one at a time.

cheers
Chook Fowler.