Clear cache after install.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@1124 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/Document/BusinessTemplate.py

@@ -37,6 +37,7 @@ from Products.ERP5Type.Utils import readLocalExtension, writeLocalExtension
 from Products.ERP5Type.Utils import readLocalDocument, writeLocalDocument, importLocalDocument
 from Products.ERP5Type.XMLObject import XMLObject
 import cStringIO
+from Products.ERP5Type.Cache import clearCache
 
 from zLOG import LOG
 
@@ -725,6 +726,9 @@ Business Template is a set of definitions, such as skins, portal types and categ
       self.installCatalog(local_configuration, update=update)
       LOG('install Business Template: ',0,'action, modules and catalog  updated')
 
+      # It is better to clear cache because the installation of a template
+      # adds many new things into the portal.
+      clearCache()
 
     def installPropertySheets(self, local_configuration, update=0):
       """