When attempting to run a base flow analysis in WaterCAD, I get message 41535, "Control condition is undefined." This is odd, since I haven't attempted to create any controls, but when I open the controls window there is a blank control there, "IF THEN ." The analysis won't run unless I delete this blank control, but when I do, I get a litany of errors, including 41891 "Pressures below the lowest physically possible..." 41355 "Disconnected demand nodes detected..." 40005 "Network unbalanced..." etc. I'm at a loss, because I've never attempted to add controls to this model, and was able to successfully run it previously. Any advice?
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