Troubleshooting: My labels are disappearing, and I am getting an error
This affects ArcMap 8.1.2 and 8.2
All labels disappear and the user may also receive the following error message:
One or more layers failed to draw: the number of points is less than required for feature
At least one layer's features must have labels activated and the user must be zoomed in so that the feature and label are displayed. This error occurs when the user attempts to pan or zoom immediately after cancelling out of the print screen.
This was a known Esri issue. It was fixed in the 8.3 release of ArcGIS.