Transparencies inside symbols does not work

Hi,

I downloaded the new trial Corel X6 installed on win 7 64-bit.

I have trouble working with transparencies inside a symbol.  It also does not work if it is power-clipped inside a symbol.  The error message is as follows:

This item cannot be stored inside a Symbol. The item must be removed in order to ba able to finish editig this symbol.

this same procedure does not work  in Corel X5

oddly enough it works in Corel X4.  very strange