PDF's Too Dark

Hi,

We recently upgraded from Corel 12 to Corel X8. Now when we export or publish to PDF the colors are much darker than before. We compared the settings from our version 12 and they are the same just the colors are much too dark. I have attached 2 JPG's labelled to show 12 and X8 from each version. I have all the PDf settings setup in Corel the same but no matter what I do I can't get Corel X8 to match up to the PDF's we make in 12.  The PDF settings are both set to CMYK and we just can't get them to match up. 

Thanks in advance.