I'm experiencing a strange issue in which I am unable to drag and drop certain transitions (in this case, the smear transition) into a crossfade. Whenever I try, a circle with a slash shows up over the crossfade (see image below). I thought this had something to do with the event length being small, but even after extending it, I still experience the same problem. Ironically, however, I haven't experienced any issues dragging and dropping media whatsoever, just some types of transitions. I am still able to add transitions the long way (i.e. right clicking on the crossfade, clicking on transition properties, and clicking on the transition of my choice), but it would save me time if I were able to just drag and drop them as I do with effects. The version of Vegas Movie Studio 17 Platinum installed is 17.0 (Build 223).