Hey Christian, Sorry, but that 'description' doesn't help because I am executing the Batch Tool from a macro; the description explains how to do it from the Windows Command Line. >> You wrote: Did you try it with a different macro and it did not work either? I just tried it with another macro, and it did not work. >> You wrote: Also please check if the macro is visible in IsoDraw at all and if you added the macro name and not the name of the *.ism file. Yes, the macro is visible; I can run it from the Macro menu in IsoDraw. And I am sure that I am using the name of the macro and NOT the ISM file. Since you asked, my IsoDraw version number is 7.0 M040. Your response to my post makes me think that the context of this line of code might help you troubleshoot my problem. For that reason, I've included my ISM file. Christian, I hope you can help me. If not, I'll have to open a trouble ticket with PTC because I am using the Batch Tool exactly as it is explained in the IsoDraw Help file. Thanks, Jose