diff --git a/addons/report_webkit/webkit_report.py b/addons/report_webkit/webkit_report.py
index 406013cef12..226c27f59bf 100644
--- a/addons/report_webkit/webkit_report.py
+++ b/addons/report_webkit/webkit_report.py
@@ -1,7 +1,7 @@
 # -*- coding: utf-8 -*-
 ##############################################################################
 #
-# Copyright (c) 2010 Camptocamp SA (http://www.camptocamp.com) 
+# Copyright (c) 2010 Camptocamp SA (http://www.camptocamp.com)
 # All Right Reserved
 #
 # Author : Nicolas Bessi (Camptocamp)
@@ -60,12 +60,12 @@ class WebKitParser(report_sxw):
     """Custom class that use webkit to render HTML reports
        Code partially taken from report openoffice. Thanks guys :)
     """
-    
-    def __init__(self, name, table, rml=False, parser=False, 
+
+    def __init__(self, name, table, rml=False, parser=False,
         header=True, store=False):
         self.parser_instance = False
         self.localcontext={}
-        report_sxw.__init__(self, name, table, rml, parser, 
+        report_sxw.__init__(self, name, table, rml, parser,
             header, store)
 
     def get_lib(self, cursor, uid, company) :
@@ -81,7 +81,7 @@ class WebKitParser(report_sxw):
                              ' http://code.google.com/p/wkhtmltopdf/downloads/list and set the'+
                              ' path to the executable on the Company form.'+
                              'Minimal version is 0.9.9')
-                            ) 
+                            )
         if os.path.isabs(path) :
             if (os.path.exists(path) and os.access(path, os.X_OK)\
                 and os.path.basename(path).startswith('wkhtmltopdf')):
@@ -118,7 +118,7 @@ class WebKitParser(report_sxw):
             head_file = file( os.path.join(
                                   tmp_dir,
                                   str(time.time()) + '.head.html'
-                                 ), 
+                                 ),
                                 'w'
                             )
             head_file.write(header)
@@ -129,14 +129,14 @@ class WebKitParser(report_sxw):
             foot_file = file(  os.path.join(
                                   tmp_dir,
                                   str(time.time()) + '.foot.html'
-                                 ), 
+                                 ),
                                 'w'
                             )
             foot_file.write(footer)
             foot_file.close()
             file_to_del.append(foot_file.name)
             command.extend(['--footer-html', foot_file.name])
-            
+
         if webkit_header.margin_top :
             command.extend(['--margin-top', str(webkit_header.margin_top).replace(',', '.')])
         if webkit_header.margin_bottom :
@@ -163,7 +163,7 @@ class WebKitParser(report_sxw):
             status = subprocess.call(command, stderr=subprocess.PIPE) # ignore stderr
             if status :
                 raise except_osv(
-                                _('Webkit raise an error' ), 
+                                _('Webkit raise an error' ),
                                 status
                             )
         except Exception:
@@ -176,8 +176,8 @@ class WebKitParser(report_sxw):
 
         os.unlink(out)
         return pdf
-    
-    
+
+
     def setLang(self, lang):
         if not lang:
             lang = 'en_US'
@@ -189,8 +189,8 @@ class WebKitParser(report_sxw):
         res = ir_translation._get_source(self.parser_instance.cr, self.parser_instance.uid, self.name, 'report', self.localcontext.get('lang', 'en_US'), src)
         if not res :
             return src
-        return res 
- 
+        return res
+
     def formatLang(self, value, digits=None, date=False, date_time=False, grouping=True, monetary=False):
         """format using the know cursor, language from localcontext"""
         if digits is None:
@@ -199,7 +199,7 @@ class WebKitParser(report_sxw):
             return ''
         pool_lang = self.pool.get('res.lang')
         lang = self.localcontext['lang']
-        
+
         lang_ids = pool_lang.search(self.parser_instance.cr, self.parser_instance.uid, [('code','=',lang)])[0]
         lang_obj = pool_lang.browse(self.parser_instance.cr, self.parser_instance.uid, lang_ids)
 
@@ -225,7 +225,7 @@ class WebKitParser(report_sxw):
     # override needed to keep the attachments' storing procedure
     def create_single_pdf(self, cursor, uid, ids, data, report_xml, context=None):
         """generate the PDF"""
-        
+
         if context is None:
             context={}
 
@@ -247,7 +247,7 @@ class WebKitParser(report_sxw):
 
         if report_xml.report_file :
             path = addons.get_module_resource(report_xml.report_file)
-            if os.path.exists(path) :
+            if path and os.path.exists(path) :
                 template = file(path).read()
         if not template and report_xml.report_webkit_data :
             template =  report_xml.report_webkit_data
@@ -266,7 +266,7 @@ class WebKitParser(report_sxw):
 <html>
     <head>
         <meta content="text/html; charset=UTF-8" http-equiv="content-type"/>
-        <style type="text/css"> 
+        <style type="text/css">
             ${css}
         </style>
         <script>
@@ -290,7 +290,7 @@ class WebKitParser(report_sxw):
             css = ''
         user = self.pool.get('res.users').browse(cursor, uid, uid)
         company= user.company_id
-        
+
         #default_filters=['unicode', 'entity'] can be used to set global filter
         body_mako_tpl = mako_template(template)
         helper = WebKitHelper(cursor, uid, report_xml.id, context)
@@ -366,11 +366,11 @@ class WebKitParser(report_sxw):
         report_xml_ids = ir_obj.search(cursor, uid,
                 [('report_name', '=', self.name[7:])], context=context)
         if report_xml_ids:
-            
+
             report_xml = ir_obj.browse(
-                                        cursor, 
-                                        uid, 
-                                        report_xml_ids[0], 
+                                        cursor,
+                                        uid,
+                                        report_xml_ids[0],
                                         context=context
                                     )
             report_xml.report_rml = None