How do I restore a corrupted data set?

If you suspect a data set is corrupted, you can delete your downloads and re-download them.

iPad Instructions:  Tap on the 'More' button in the bottom-right, tap on 'Downloads' in the top-left, and then tap on the red 'Delete' button in the bottom-right.  A prompt will come up where you can select 'Delete All'.  

When the old files have been removed, tap on the blue "Download" button to grab a fresh set of downloads.

iPhone/iPod Instructions:  Tap on the 'MENU' button in the upper-left, tap on 'Downloads' and then tap on the red 'Delete' button in the bottom-right.  A prompt will come up where you can select 'Delete All Downloads'.  

When the old files have been removed, tap on the blue "Download" button to grab a fresh set of downloads.

NOTE:  You will want to be on a Wi-Fi network when downloading bulk data because it could take up a considerable amount of your data plan allowance if the download is performed over a cellular network.