I never had this problem before.  When I select "make movie" and click on "create disc" I am asked to insert a blank disc.  I do that and click again on "create disc" and it ejects the disc and asks me again to insert a blank disc.  I am using a RW disc, but even when I put in a "blank" disc I get the same response.  I am using S14 Ultimate v14.0.0.7255 on a PC using XP Pro