Have a look in CDraw forum you can see 2 members are having problems there. http://coreldraw.com/forums/t/2607.aspx
Now I have a PC so can't tell if it is an OS problem or a Painter problem, all I can say is that I don't have problems copy and pasting from AI into CD and then into Painter. If the EPS file transfer is still a problem to open in painter and if you have a copy of PhotoShop why don't you use that route as Painter has much improved import?