Connect previews

I still cannot view some CDR files in Connect. For instance, it will show images of all of the files in the Baseball clipart folder but only icons in Basketball. Some folders will only show some of the files. Nor can I get a preview when opening files in Draw.

I have unistalled all previous version of CDGS, made sure Corel Graphics-Windows Shell Extension is installed and made sure CDR files are associated with Draw X6.

What am I doing wrong?