Finale Frustration

Having stripped all the paint off the hull, re-sanded, cleaned and applied another coat of pigmented resin this happens

Whilst tipping the resin hasn't smoothed itself out but has pulled back into globules.  In the above photo the resin has cured

I've done some surfing but cant identify the cause.  My gut feeling is that it's either caused by not cleaning off any remaining acetone residue post sanding or the surface was sanded too smooth.  What I do know is that this is the first time I've had this problem and I'm not really looking forward to having to do even more sanding