Paolo, our Corel friends have allegedly said in public that a patch for Mac will come too.
Until you get the patch ... don´t you keep a Time Machine backup ?(or any other if you run Tiger) Backing up is so easy, complete in Mac OSX that is a sin to forget it .
I don´t use TM but Superduper, Even the free version works like charm. We can get incremental bootable, identical copies of our whole drives for free. (something you cannot even dream in Windows) Don´t forget it.
I know it´s not the solution but just want to remind it. Hope it kinda helps... :(