Compressor Academic at first would unexpectedly quit when choosing submit after importing a 'preencode file' from fcp. After running Disc Warrior, which did identify one or two problems in several folders, the compressor does not quit but a box pops up with message that 'it can not connect to background process.' This G5 dual processor has been successfully compressing my fcp videos for the last 5 years. Any ideas why not now and - or how to fix??