Virb Edit Error

Just bought a Virb XE and done a couple of short videos, and everything worked fine. Updated to the new version of the software and everytime I try to export the video it goes to 75% and then comes up with an error "There was an error exporting the video" and stops. I've tried adjusting the output quality to make a smaller file but that didn't work. The error message isn't very helpful to what is going wrong....any one got any ideas?? Thanks in advance