[UPDATE]

crm_claim_rma/crm_claim_rma_view.xml

@@ -326,6 +326,15 @@
         res_model="stock.picking" 
         src_model="crm.claim"/>  
 
+
+ <!-- act_window
+
+            context="{'search_default_account_id':[active_id], 'search_default_unreconciled':1, 'default_account_id': active_id}"
+            src_model="account.account"/>
+
+        <act_window domain="[('reconcile_id', '=', active_id)]" id="act_account_acount_move_line_reconcile_open" 
+        name="Reconciled entries" res_model="account.move.line" src_model="account.move.reconcile"/ -->
+        
 <!-- Menu -->
 	<!-- return lines action -->
         <record model="ir.actions.act_window" id="act_crm_case_return_lines">

crm_claim_rma/wizard/returned_lines_from_invoice_wizard_view.xml

@@ -25,7 +25,7 @@
     <data>
 <!-- SELECT INVOICE FORM VIEW -->
         <record id="view_create_return_invoice_form" model="ir.ui.view">
-            <field name="name">returned_lines_from_invoice_wiew</field>
+            <field name="name">returned_lines_from_invoice_view</field>
             <field name="model">returned_lines_from_invoice_invoice.wizard</field>
             <field name="type">form</field>
             <field name="arch" type="xml">

product_warranty/product_warranty.py

@@ -54,7 +54,9 @@ class product_supplierinfo(osv.osv):
     def _get_default_instructions(self, cr, uid,context):
         instruction_ids = self.pool.get('return.instruction').search(cr, uid, [('is_default','=','FALSE')])
         if instruction_ids:
-            return instruction_ids[0]     
+            return instruction_ids[0]    
+            # TO DO f(supplier) + other... 
+        return False
                     
     _columns = {
         "warranty_duration" : fields.float('Warranty', help="Warranty in month for this product/supplier relation. Only for company/supplier relation (purchase order) ; the customer/company relation (sale order) always use the product main warranty field"),