Hi mdc101,
If you are on windows, you can
1. Right click my computer or this pc, click properties.
2. Choose advanced tab or settings ,
3. Click on environment variables... button
4. In the user variable section, click new
5. Enter AI_ENABLE_SAFE_MODE in the name field
6. Enter 1 in the value field
7. Save and close the dialog
Your environment variable is defined. Now you can follow other steps.
Sanjay.