Batch Export in Cubase 5

Hi guys hope you can help!!
Im currently using cubase 5 64 bit and am trying to do a batch export. Ive selected all of the required channels in the export audio mixdown window, selected the destination folder and when I hit export I get the message ‘Unexpected Error’?

Any ideas?

Many thanks
Jamie

Does Cubase crash afterwards? What exactly does the box say?