"Stroke storage FULL, please archive a notebook." message on smartpen display
You have reached the limit for the amount of ink strokes that can be stored on your Pulse smartpen (wifi and Echo smartpens with the latest firmware installed do not have a stroke storage limit). There is not an exact figure for the number of pages written on that will cause the stroke limit message. In general if you have three completely full notebooks with very dense writing/drawings or up to approximately nine semi-full notebooks then you may be close to your stroke limit. This is separate from the amount of memory that is allowed for storing audio on the smartpen, so your smartpen may still be able to record audio but will not record your handwritten notes until after you free up some ink stroke memory. You do this by archiving (removing) notebooks from the smartpen.
"Archiving" a notebook from an Echo smartpen using Livescribe Desktop