Insufficient memory - too many design elements or
Insufficient memory - too many design elements (desk design pool)
This can be fixed by increasing the size of your desktop cache on Notes.
To do this in R4: Right click on your Notes Workspace's background.
Select Workspace Properties.
Select the white on blue i and increase the space you have allowed to 10 Mb or more.
Compact the workspace cache for good measure.
If this does not work, remove the database icon and re-open it.
Try again.
To do this on R5 you need to select the Propeller head instead of the blue i.