I received several questions on where to find the license key to work with the free MashZone version. Here is how it works:

Step 1: Get an ARIS Community account
Click on: "View your profile"
Click on: "Get free ARIS MashZone license"
Copy the license key

Step 2: Go back to MashZone
In the main navigation click on "Home"
In the main navigation click on: "Administration"
Click on "Licensing"
Click on: "Add new license key"
Paste the license key

Have fun mashing
 

Joerg