If you are unable to transfer your map to the MindGenius desktop application to print, it is possible to screen shot the application and use the printing functionality of the iPad photo viewer to print a map.
To do this:
- Scale your map to fit within the visible area
- Hold down the power button (top edge)
then immediately press the home button 
- Tap the home button to return to the home screen
- Tap "Photos" to open the photo viewer
- Tap your screen shot to open
- Tap the actions button, followed by "Print"