OSCommerce to ZenCart conversion Script

the script asks for two things a database to refer to and a prefix

i have figured out the database and dreamhosters told me there was no prefix
now when i insert the database name i get an error “1054 Unknown column ‘attribute_sort’ in ‘field list’” and thus doesn’t transfer the database contents, so please tell me what i am missing, if i am referring to the wrong database, anything to help me get my store back on its feet!

please help this is a real SOS