BIG-IP : iControl : System/ConfigSync::download_configuration() : error opening file for read operations

The download_configuration() method looks in the /var/local/ucs directory for the specified file. From the looks of the call, you are trying to get the bigip.conf file. If that's the case, it is located in the /config directory. To get at that, you will have to use the download_file() method and pass in a full path to "/config/bigip.conf". If you are trying to get a .ucs file from the /var/local/ucs directory, you'll want to type in the full name in the download_configuration() method. For instance "bigip.ucs" will translate to a file download of "/var/local/ucs/bigip.ucs" on the system.