I just purchased a new Imac and am having the same problem. I can import pdf files via import image, but I cannot view pdf files in existing vw documents. After several calls with VW tech support and Apple tech support, I have come up with a way to view existing pdf files in existing drawings. I had to create a new account in the systems preferences. Apparently this is a communication problem in accounts. The new account lets me view old files properly. I guess I will continue to use my old account for new work, and switch to the new user account to view old files when necessary. This is not perfect, but at least I don't have to reconstruct hundreds of pdf images, or continue to use my old computer for those situations. This is a very big issue for those of us in Florida who have to import dozens or hundreds of pdf images into our working drawings for required product approval information. Hopefully, VW will be able to come up with a solution.
