Error on opening file for cellblock : "Bad magic number"

    Dec 23 2012 | 12:15 pm
    I would like to write a table of strings and numbers using made using cellblock command. It works, I got a text file with all the data. But when I open this table using "open" message to a new cellblock, I got the error message :
    myfile : bad magic number cellblock: error reading myfile
    Can you help me please ?