Hello Mr. Steve,
Thanks for your respon, i already define primary key form my table, here my table definition:
table name : uh
Id` int(11) NOT NULL auto_increment,
`pile` varchar(255) default NULL,
`tes` tinyint(4) default NULL,
PRIMARY KEY (`Id`)
and this my field.ini definition :
[pile]
Type = container
widget:type = file
i already try change the structure as blob datatype and attach two more field named as pile_mimetype, and pile_filename. but still got the same problem. is it possible this problem arise because i use apache that running in windows envinronmet? Today..i setup new server running Linux..hopefully can solve this problem..
again.. nice product from you mr. steve

TIA,
cheers,
panji