Hello,

I have this code:

from openerp.osv import fields, osv
from openerp.tools.translate import _
import openerp

class hr_expense_expense(osv.osv):
	_inherit = 'hr.expense.expense'
	_columns = {
		'issue_id': fields.many2one('account.analytic.line','Incidencia'),
	}

class account_analytic_line(osv.osv):
	_description = 'Analytic Line'
	_inherit = 'account.analytic.line'
	_columns = {
		'expenses_id': fields.one2many('hr.expense.expense','issue_id','Gastos'),
	}

And get this error:

2015-04-29 07:13:55,604 4039 CRITICAL Conecta openerp.service.server: Failed to initialize database `Conecta`.
Traceback (most recent call last):
  File "/opt/bitnami/apps/odoo/lib/odoo-8.0_a2115ef-py2.7.egg/openerp/service/server.py", line 906, in preload_registries
    registry = RegistryManager.new(dbname, update_module=update_module)
  File "/opt/bitnami/apps/odoo/lib/odoo-8.0_a2115ef-py2.7.egg/openerp/modules/registry.py", line 341, in new
    openerp.modules.load_modules(registry._db, force_demo, status, update_module)
  File "/opt/bitnami/apps/odoo/lib/odoo-8.0_a2115ef-py2.7.egg/openerp/modules/loading.py", line 354, in load_modules
    force, status, report, loaded_modules, update_module)
  File "/opt/bitnami/apps/odoo/lib/odoo-8.0_a2115ef-py2.7.egg/openerp/modules/loading.py", line 263, in load_marked_modules
    loaded, processed = load_module_graph(cr, graph, progressdict, report=report, skip_modules=loaded_modules, perform_checks=perform_checks)
  File "/opt/bitnami/apps/odoo/lib/odoo-8.0_a2115ef-py2.7.egg/openerp/modules/loading.py", line 158, in load_module_graph
    models = registry.load(cr, package)
  File "/opt/bitnami/apps/odoo/lib/odoo-8.0_a2115ef-py2.7.egg/openerp/modules/registry.py", line 148, in load
    model = cls._build_model(self, cr)
  File "/opt/bitnami/apps/odoo/lib/odoo-8.0_a2115ef-py2.7.egg/openerp/models.py", line 595, in _build_model
    original_module = pool[name]._original_module if name in parents else cls._module
  File "/opt/bitnami/apps/odoo/lib/odoo-8.0_a2115ef-py2.7.egg/openerp/modules/registry.py", line 101, in __getitem__
    return self.models[model_name]
KeyError: 'hr.expense.expense'

I'm just trying to add a relation between expense and timesheet, so the user can add it's expenses in the timesheet (and keep related the work he did, with its expenses)

Hope you can help me. Thank you.