Running fcp 7 on a mac pro tower (8 core) with snow leapard. Followed the Ken Stone instructions for burning a blu-ray disc to a standard DVD media using the share option and it worked beautifully the first time. http://www.kenstone.net/fcp_homepage/burn_br_mac_superdrive_stone.html I'm trying to do it again and it will not work. When I attempt to export, the "export" button is unresponsive. If I choose the Send to Compressor button or the Cancel button, it works on the first click attempt but I can click all day long on the export button and no response. I've tried relaunching fcp and rebooting the computer, to no effect. Any suggestions?