That's really a different discussion, and ideally you'd create a new topic
here and give us a lot more info.
Please tell us what PD version you had before, anything you did with your computer or that content between that time and when you installed PD18, and what seems to be missing in PD18.
Let us know if you're talking about content that came with your earlier PD version, things you created/customized, and/or things you downloaded from DirectorZone.