How to remove the yellow matte when exporting to jpeg or bmp?

Dear Fellow Corel Draw users

I recently updated to Corel Draw service pack one (X5 suite). After this update the background color has changed into a light yellow when I try to export to jpeg format (see attached screen shot). In the matte color menu in the export window I have the option of changing this color. All colors are there except White! (or transparent). This is driving me nuts. I would just like to be able to export to jpeg with a White background. I have changed no settings, only installed service pack 1.

Have any of you experienced anything similar, or do you know how to get rid of the yellow background/matte? Any help would be greatly appreciated.

I am considering uninstalling Corel Draw, then reinstalling without installing the service pack.

Best regards

       Johan