For v4 or earlier versions only) How much extra memory do I need?
The most likely problem is that your PDA is running out of on-board memory. We recommend users to load all maps onto different SD or CF cards, so you can just pop them in and out, and reserve the onboard PPC memory for route calculation. Since iGuidance current versions only support single map file, make sure you select all the states you want and load them all at once instead of loading single state each time.