Weird unicode problem

Hi list,

We use Postgresql 9.3 on Ubuntu 14.04 with psycopg2 and python2.7 on Ubuntu 12.04

Now we have a Euro sign (€) in a text field. When I try to retrieve the row I get the following traceback:

2015-04-15 14:48:00,918 ERROR comsupport.dick SQLDict 326 SELECT "per_id", "lob_id", "lob_datum", "soortentry",
"gelezen","txthdr", "lob_text", "ondhpgm", "mutmed", "mutdat", "per_naam1", "lob_categorie", "prive", "classificatie 
", "entry_owner", "dossier", "toturen", "ncat_id", "cli_id", "doel_tekst", "doel_gehaald", "doel_tonen", "doel_title",
"doel_plandate","hdoel_id", "tab_id", "doel_id", "tab_naam", "tab_naam_kort", "ingangsdatum", "vervaldatum",  
"note_sjabloon_title", "note_sjabloon", "mimetype" FROM "comsupport"."vwclasslogboek"  sqd1  WHERE per_id = 61 AND
(classificatie in (3679,3386,0) or classificatie is null) AND lob_categorie in ('E','H') order by  lob_datum DESC 
, mutdat DESC
2015-04-15 14:48:00,919 ERROR comsupport.dick SQLDict 327 parameters ()
2015-04-15 14:48:00,920 ERROR comsupport.dick SQLDict 328 Exception
Traceback (most recent call last):
  File "/opt/CVix-prod/src/SQLConnect/SQLDict.py", line 319, in executeSQL
    self._resultcursor.execute(stmt)
DataError: character with byte sequence 0xe2 0x82 0xac in encoding "UTF8" has no equivalent in encoding "LATIN1"

But I don't understand this because I have added a type caster to the connection like so:

import psycopg2
import psycopg2.extensions
import psycopg2.extras
psycopg2.extensions.register_type(psycopg2.extensions.UNICODE)
psycopg2.extensions.register_type(psycopg2.extensions.UNICODEARRAY)

Now I thought that after adding this, conversion to unicode is executed automagically????

Cheers,
D. Kniep
Lindix BV