Hello,
I wasn't sure to post, but i thought it might be a good idea if by any chance there is a bug (as CDBunerXP is great, thanks for the good work !)
So, i have had twice a fail (2/2 actually) while using the option "copy disc" on a DVD with datas (source DVD is already a burnt DVD).
The burning process failed the 2 times at the same point it seems as i only got the same partial data on the target DVD in the end, twice.
It seems it is failing stating that the DVD is finalized and that it can't burn data anymore.
I am quite sure i did uncheck the "finalize disc" optio