Hi Jana,
OSStatus error -47 is caused when a delete is being performed on an object or file that is in use by another application. The issue is usually caused by SpotLight running in the background (the OSX search utility). Try temporarily disabling SpotLight using a little utility called Spotless – https://www.macupdate.com/info.php/id/18141 – before compiling/burning the disc with Encore and the problem should go away. The problem can also be caused by anti-virus software interfering but is more likely caused by SpotLight. Adobe should take this into account in the software design and wait for the file to be released but this is a QA issue.
Regards,
Steve