Not sure where to ask for this but? I have been using simply accounting 2005 for basic accounting and works great for my small business. Last week I installed windows 10 on my laptop and now when I want to do a backup on a usb stick I have a message "unable to delete pre-existing backup files. One or more of these files might have been set to 'read-only' Using the WIndows Explorer uncheck the 'read-only' in the properties setting for these files. Backup aborted" I tried unchecking the backup file read only box but it automatically gets back checked.