Hi Dave,
I agree, showing this message as an "error" is missleading, better would be calling it "warning". This warning tells the user, that there is data in the set file which couldn't be displayed. This gives the user the opportunity to check if all data / elements are shown. After this check the user can truncate the file, by using the save command. We can now discuss if its usefull, to ask for "continue yes / no", or just acknowledge this warning with "OK" and don't save the data.
Using Screen4 doesn't do anything different, the only exception is, Screen4 doesn't tell, that there is data in the set file which isn't shown. When saving data, the file size is just truncated.
Klaus