We're going to need some details to help here. What are you trying to do when you see this error? Does the error appear in a dialog box or in the log?
I'm doing some DOE stuff currently but I've seen it in multiple spots. It comes up in the log right now but it's because I'm scripting. It happens 4 or 5 times in the script I run but I haven't narrowed down which part of the script is actually causing it. Does it mean different things in different spots? Does it mean something in general?
Jeff's right, need more info. I'm having no luck finding where JMP might generate that message.