This error occurs when:

1.You attempt to open an article element that contains corrupted text.

2.With the Text.InsTedText command, you attempted to insert an invalid string in the text.

3.You imported a content in the text, but the conversion produced corrupted text.

To correct this error

1.Close the article element that causes problems, and then try to load one of previous article versions.

2.Correct the string parameter of the Text.InsTedText command. Typically the error is related to misplaced > and < brackets.

3.Delete the imported part, and then check the source text and the conversion table.