Iomega have finally updated the REV Tools/Drivers to add Leopard compatibility with UDF formatted disks. Get it here...
https://iomega-na-en.custhelp.com/c...zAmcF9jdj0xLjczJnBfcGFnZT0x&p_li=&p_topview=1
https://iomega-na-en.custhelp.com/c...zAmcF9jdj0xLjczJnBfcGFnZT0x&p_li=&p_topview=1