Error in Schedule C

I have an error in Schedule C that I cannot get rid of. I have three lines that appear to be blank, with zeros in the dollar amounts. This has carried over for several years. I cannot get rid of it. The error says that "Other Expense Text is invalid. Please remove all preceding spaces or invalid characters". I have hit the delete key and the backspace key repeatedly in those blank description lines, and tried to delete the zeros. No dice. I have three errors, on three separate lines.