SB fixes

servicebuildermdl/servicebuildermdl.go

@@ -196,9 +196,9 @@ func (sb *ServiceBuilder) AddStep(stepname, rule string, ld LoadData, blfunc, er
 		if errormdl.CheckErr1(err) != nil {
 			loggermdl.LogError("Error in step: ", stepname, err)
 			sb.ServiceError = errormdl.CheckErr1(err)
-		} else {
-			step.expr = expr
+			return sb
 		}
+		step.expr = expr
 		mutex.Lock()
 		ruleCache[rule] = expr
 		mutex.Unlock()