Mod_python error: "PythonHandler mod_python.publisher"

Traceback (most recent call last):

  File "/usr/lib/python2.4/site-packages/mod_python/apache.py", line 299, in HandlerDispatch
    result = object(req)

  File "/usr/lib/python2.4/site-packages/mod_python/publisher.py", line 213, in handler
    published = publish_object(req, object)

  File "/usr/lib/python2.4/site-packages/mod_python/publisher.py", line 412, in publish_object
    return publish_object(req,util.apply_fs_data(object, req.form, req=req))

  File "/usr/lib/python2.4/site-packages/mod_python/util.py", line 439, in apply_fs_data
    return object(**args)

  File "/var/www/bin/localhost/buscar.py", line 35, in index
    b.SacaNoticias(par)

  File "/var/www/bin/localhost/buscar.py", line 595, in SacaNoticias
    self.ComunUsuario(pl, par)

  File "/var/www/bin/localhost/buscar.py", line 571, in ComunUsuario
    self.PerfilUsuario(pl, par['u'])

  File "/var/www/bin/localhost/buscar.py", line 974, in PerfilUsuario
    row = self.QueryRow("SELECT nombre, cargo, organizacion, url, foto, pais, perfilcorto, cv, alta, articulos FROM %s WHERE alias = '%s'" % (self.canal['tablas']['colaboradores'], esc(nick)))

  File "/var/www/bin/api/dice.py", line 178, in QueryRow
    if self.cursor.execute(sql) > 0:

  File "/usr/lib/python2.4/site-packages/MySQLdb/cursors.py", line 163, in execute
    self.errorhandler(self, exc, value)

  File "/usr/lib/python2.4/site-packages/MySQLdb/connections.py", line 35, in defaulterrorhandler
    raise errorclass, errorvalue

ProgrammingError: (1064, "Algo est\xe1 equivocado en su sintax cerca 'WHERE alias = 'B\xe1rbaraG'' en la linea 1")