Error 5505 Column data types cannot be specified with a WITH [NO] DATA clause. - forum topic by cschillinger@ebay.de

I get this error when I create the second of following statements and do not know why.
Statement 1:
CREATE VOLATILE TABLE wow  (
id DEC(18,0)
) UNIQUE PRIMARY INDEX(item_id)
ON COMMIT PRESERVE ROWS;
Statement 2:
INSERT INTO wow  VALUES (?);
 
After statement 1 I switch to 'Import Data' in my SQL assistant and select the appropriate file (1 line per row). SQL assistant is version 14. I had version 13 previously and it worked with it perfectly, but not anymore with version 14. Any suggestions why?