Hi: I am new to Mason and have just downloaded Mason and the Urban Traffic Simulator inside Mason ( and hopefully all the related libraries). I have gotten Mason itself to compile/run smoothly but when I compiled the traffic simulator, it (the Eclipse) reported the following errors: Description Resource Path Location Type Cannot invoke elements() on the array type double[] BoxAndWhiskerCalculator.java /mason/sim/util/jfreechart line 32 Java Problem Cannot invoke elements() on the array type double[] BoxAndWhiskerCalculator.java /mason/sim/util/jfreechart line 39 Java Problem Cannot invoke elements() on the array type double[] MyTallyInArray.java /mason/sim/util/stats line 143 Java Problem Cannot invoke elements() on the array type double[] MyTallyInArray.java /mason/sim/util/stats line 144 Java Problem Cannot invoke elements() on the array type double[] StatisticUtilities.java /mason/sim/util/stats line 256 Java Problem Cannot invoke elements() on the array type double[] StatisticUtilities.java /mason/sim/util/stats line 257 Java Problem Cannot invoke elements() on the array type double[] TripDelayByLength.java /mason/sim/app/traffic/analysis line 296 Java Problem Cannot invoke sort() on the array type double[] MyTallyInArray.java /mason/sim/util/stats line 54 Java Problem The return type is incompatible with Tally.clone() TallyInABag.java /mason/sim/util/stats line 69 Java Problem The type Console is ambiguous DeficitGridCityTrafficSimWithUI.java /mason/sim/app/traffic/analysis/creditdeficit line 41 Java Problem The type Console is ambiguous DeficitGridCityTrafficSimWithUI.java /mason/sim/app/traffic/analysis/creditdeficit line 41 Java Problem Type mismatch: cannot convert from double[] to DoubleArrayList MyTallyInArray.java /mason/sim/util/stats line 60 Java Problem Type mismatch: cannot convert from double[] to DoubleArrayList MyTallyInArray.java /mason/sim/util/stats line 94 Java Problem Type mismatch: cannot convert from double[] to DoubleArrayList RankTTestAnalysis.java /mason/sim/util/stats line 169 Java Problem Do you know where the errors may come from? Are these errors due to some libraries out of sync? Thanks Ming -------------------------------------------------------------- Ming Yang, PhD Media & Mechatronic Systems Group Xerox Research Center Webster 800 Phillips Rd (MS:0147-11B); Webster, NY, 14580 Ph: (585) 422-2375 Fx: (585) 231-8404 --------------------------------------------------------------