Hi There, Working on new version of APODIO http://www.apodio.org & wiki of the work in progress http://www.apodio.org/wiki (please add ideas there if you feel like!!) I compiled monobristol (bristol GUI) and met the same problem as falktx which to be around here. the erro when starting monobristol is : Unhandled Exception: System.NullReferenceException: Object reference not set to an instance of an object at MainWindow..ctor () [0x00000] at monoBristol.MainClass.Main (System.String[] args) [0x00000] I followed this message : http://old.nabble.com/Is-anyone-using-monobristol-0.60.1--td29132285.html (which seems to be the same everywhere) I uptaded it with the repository of kxstudio... but same error... did I missed something? I used ubuntu 10.04 thanks for the answer Julien -- APO33 space of research and experimentation http://www.apo33.org info(a)apo33.org