If you experience a white screen instead of a data download progress, this can happen if you have used the "Back to Parent Report" button before reselecting the data. you want to download.
To rectify this go back to the top report level and restart your report data selection. There is no other fix to this right now - sorry!
Detailed steps to reproduce the problem:
1. Click on a county from the initial data that shows with the map.
2. It starts to load data - Click CANCEL to stop it loading that data (maybe because you selected wrong county etc)
3. Click the Back to the Parent Report button
4. Select a new county and it goes to the page as if it is loading data but no data icon displaying.