Hi Larry Thank you for your query. As a first step, can you please confirm if you are using the exercise system that comes with the Pega Marketing Essentials course? Please note that it is different from the exercise system that comes with the Pega Decision Management Essentials course. You can quickly verify this by looking at the filenames: Pega Decision Management Essentials - Exercise system filename: DSME715_SS_PVS_20150224.zip Pega Marketing Essentials - Exercise system filename: NBAME_715_SS_PVS_20150224.zip Regarding your second query: The easiest way is to remove the virtual machine from the VM Player, uncompress the original exercise system file again and start afresh. Alternatively, if you have a VM Player that supports 'snapshots', you can take a snapshot of the virtual machine before starting the exercises and return to this state at a later point in time when you want to start afresh. Regards Guru