diff --git a/odoo-rpc.py b/odoo-rpc.py
index 684af64..671e98c 100755
--- a/odoo-rpc.py
+++ b/odoo-rpc.py
@@ -222,27 +222,31 @@ current_exports = []
 
 def lookup_model( muid ):
 	eprint( "> Lookup model: %s" % (muid) )
-	_stack = []
+	# _stack = []
 	_tree = {}
-	_ctree = _tree
+	# _ctree = _tree
 	model, id = muid.split( '/' )
 	id = int(id)
 	eprint( model, id )
 	_tree[muid] = {}
-	_ctree = _tree[muid]
+	# _ctree = _tree[muid]
 	
 	if model in odoo.env:
 		rfields = rel_fields( model )
 		eprint( rfields )
-		inst = odoo.env[model].browse( id )
+		try:
+			inst = odoo.env[model].browse( id )
+		except:
+			_tree[muid]['error'] = 'Instance %s not found' % (muid)
+			return [ _tree ]
 		# data = inst.read()[0]
 		# size = len( json.dumps(data, indent=4) )
 		# filename = json_path( model, inst.id )
-		# _ctree['size'] = size
+		# _tree[muid]['size'] = size
 		
 		for field in rfields:
 			# if data[field.name]:
-			# _ctree[field.name] = {}
+			# _tree[muid][field.name] = {}
 			_value = getattr( inst, field.name )
 			print( field.name )
 			print( _value )
@@ -251,10 +255,10 @@ def lookup_model( muid ):
 				if field.ttype == 'many2one':
 					id = _value.id
 					# _stack.append( Muid(field.relation, id) )
-					_ctree[field.name] = [ Muid(field.relation, id) ]
+					_tree[muid][field.name] = [ Muid(field.relation, id) ]
 
 				if field.ttype == 'one2many':
-					_ctree[field.name] = [ Muid(field.relation, id) for id in _value.ids ]
+					_tree[muid][field.name] = [ Muid(field.relation, id) for id in _value.ids ]
 					# for id in _value.ids:
 					# 	_stack.append( Muid(field.relation, id) )
 				
@@ -262,9 +266,9 @@ def lookup_model( muid ):
 				# if field.ttype == 'reference':
 	
 	else:
-		_ctree['error'] = 'Model do not exists'
+		_tree[muid]['error'] = 'Model do not exists'
 	
-	return _tree
+	return [ _tree ]
 
 def lookup( model, domains ):
 	eprint( "> Lookup: %s %s" % (model,domains) )