Trying to finish up a project but my school just upgraded to cs4 this week. It's running on a mac. I tried to export to no avail, watched a tutorial and saw that media encoder is supposed to launch on export. Since it wasn't launching, I went to media encoder and launched it seperately and re-exported. It still did not work. Is there a patch that needs downloading? Please help me get through this. I need to wrap this up ASAP.