ADODB.Recordset error ’800a0cb3’

i upgrade my Db access to Sql upsized and all ran the setup sql changed in common and all

and all run ok but whan tried post msg i got the error :

whan i tried to post msg or replay i got error :

ADODB.Recordset error '800a0cb3'

Current Recordset does not support updating. This may be a limitation of the provider, or of the selected locktype.

/Forum/ver9/post_message.asp, line 746

in that line :

'Insert the new Thread details in the recordset
  .AddNew

i didnt find way to fix it . . .

help ?