Hi Sharon,

Thank you for your advice! The problem might be that I had too much data I put in in one go. 

Splitting the data into smaller chunks and making sure nutil and the data are both on the C: drive seems to have fixed the issue of the RefAtlas regions report - especially when I turn off the coordinates. 

To get one final RefAtlas regions report for the whole data series, would you suggest to take the sum of the cell counts in the whole series (all sections combined) RefAtlas regions report per chunks I've divided the data into? 

Best, 

Britt