Video Transitions Bug?

[iDAtlas]

Trying to add a transition to a clip and it wont go. I drag it, and it just disappears and wont add a cross dissolve, dip to black, nothing. It's a picture so there isn't an issue with the length of the clip (not having a handle or whatever. I made it like 1 min long and it still wont apply.)  I deleted the clip, dragged a new one in, still does the same thing.
I tried turning off the Composite Linear Color thing in the Sequence Settings. Still broken. I've been adding this dissolve on image after image and it's been just fine, and now it's randomly deciding to not do it anymore.

[Ann Bens]

Reset preferences - Premiere Help