Wife has a an iMac running OSX 10.14.6 and up until today, everything worked. Tried to load Audirvana which is set up to allow iTunes to manage the library and it keeps shutting down with a lengthy page of script whose importance is lost on us. The iMac is connected to a DAC via a USB cable (should this information be pertinent). So has anyone experienced this behavior and have any suggestions? We cannot bring up Audirvana to check settings nor change the iTunes relationship.