I am SIMPLY trying to copy an entire row from one EXCEL workbook (hi-lite the entire row by clicking on the row # at the left side of page, then right-click and select copy), and insert a copy of it into another workbook using "insert copied cells" (right-click on the row number, then insert copied cells). I have been performing this very same function for years using EXCEL 2003, and now that I have EXCEL 2010, it gives me the error message...