I am having a similiar problem with CloneDVD 2802 as spiderman_jab, but it seems to only be with MCC 004 DVD+R discs. All of my other media works fine. When I try and use the MCC 004 media, it reads the disc fine but just sits on the writing screen and does nothing. If I pop in another disc, it writes just fine and the MCC 004 discs work fine when burning with Nero. I have used these discs with earlier versions of CloneDVD and burned at 16x without issues. My cancel button is also greyed out now too. I am using the Windows IDE drivers and have an internal burner. Any ideas?
edit: Just tried it twice more with the same media and one worked and one didn't work. Didn't do anything differently. Maybe I got a bad batch of media. Made two copies and have had 3 coasters.