My exe runs fine one all my test systems and tests ok in JetPack, but it fails to start on some (but not all) of my client's computers. I emailed support about this and they said to run gui - my.exe to turn the console one, then do a SET JETVMPROP=-Djet.report.not.found.methods and run the exe to see what it prints out. However all this does is print out: Warning! Unknown JET property: jet.report.not.found.methods Exception in thread "main" So I think they told me the wrong property name. I eamiled them back about it yesterday and still have gotten no response. Does anyone know what the right property name is or how to figure out what is going wrong?