csv product import extension shows database error

hi,
i am using opencart 1.5.5.1 with csv product import extension. but i can not import csv files since below error is shown at admin page System -> csv product import
"Database is not compatible with the extension. Please re-install the extension on the 'Product Feeds' page. "
please help how to remove this error.

Did you do as it asked? Did you ask the extension author about it?