Hi Todd
I was using only a single solid layer! I was messing around with the layer and was going to investigating the ability to bend layers etc. I was actually looking at one of your tuts on the subject. I created a layer and changed the setting to ray traced and the warning message came up simple as that.
The system I was on was a MBP 16GB ram in settings I have 3GB reserved for other Applications on the system.
Couldn’t understand it al all.