Hi I am using a legacy database that the primary key is named "ProductID" and its type is SERIAL (or INT NOT NULL auto_increment). set_primary_key "ProductID", is added to the Product class Then I used >ruby script/generate scaffold Product Admin to generate my controllers. When I try to insert a new product in the products table, it gave me this error RuntimeError: ERROR C42P01 Mrelation "product_productid_seq" does not exist Fnamespace.c L195 RRangeVarGetRelid: SELECT currval(''Product_ProductID_seq'') What does this mean and is what can I do to solve this? Thank you! -- Posted via http://www.ruby-forum.com/.