Hi, I'm Norman, from Germany, new to your mailing-list and I have a problem with geomason. I try to run the sillypeds demo, but it won't work. It would be nice if you could help me. My configuration: Win7, eclipse-indigo, all needed libs in build-path, imported the source code from the zip-file provided by the geomason homepage got missing data files (first.txt.gz) from http://code.google.com/p/mason/source/browse/trunk/contrib/geomason/ now to my problem: Mason starts without any problems but when I hit the run button following exception is thrown: java.util.InputMismatchException Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException at sim.app.geo.sillypeds.SillyPeds.scenarioSimpleRoom(SillyPeds.java:76) at sim.app.geo.sillypeds.SillyPeds.start(SillyPeds.java:102) at sim.display.GUIState.start(GUIState.java:289) at sim.app.geo.sillypeds.SillyPedsWithUI.start(SillyPedsWithUI.java:98) at sim.display.Console.startSimulation(Console.java:1432) at sim.display.Console.pressPlay(Console.java:2271) at sim.display.Console$1.actionPerformed(Console.java:285) (...) Debugging lead to the fact that Space floor = setupLandscapeSpace("data/first.txt.gz"); in SillyPeds.java (line 67) is still null. The file is in the right directory -> any change (extracting the file, moving to src-directory) lead to other exceptions (e.g. FileNotFoundException when moving the file). The file is obviously found, so I have no clue why there is a type mismatch. Do you have any idea? Kind Regards, Norman