I've migrated OpenERP database to another server. Import was completed successfully. But now menu web icons aren't displaying, and i can't open downloaded attachments from knowledge module. I launched debugger with some breakpoints on local machine and found out, that corresponding values (ir_ui_menu.web_icon_data) was returned as base64 encoded string, but on server they was returned just as binary data. so i tried to select values of this field in psql and saw the same binary data on my old server and current server, but when i run a simple python script using psycopg2 which did the same action, on my old server i get base64 encoded string, but on my current server i got just binary data. so, please explane me, what's matter with psycopg2 or what configuration is missing in postgres server.