Thanks for that. I did log in as administrator this morning but that didn't help. It was, as you say, a permission issue. I needed 'Admin. permission to delete the configs file' but I am the admin! Could it mean aslain as it is his configs file? Anyway, i turned off my anti virus and tried again, i have done this before, but this time it installed properly. Why? I have no idea! I appreciate the support.