Final Cut Pro X freezing when I stack transitions?

Question

I'm trying to place transitions on images that are stacked in my timeline, however every time I try to put a transition on the 5th image, final cut refuses to render the small transition and freezes. I've restarted the computer, I've tried uninstalling and reinstalling Final Cut, but nothing seems to work.
One thing that fixes the issue is if I'm quick enough to delete the transition before it freezes, the problems stops and I can use Final Cut normally, but the second I try to place the transition, it freezes up again.
I'm on a 2012 iMac 27" with the basic specs. Many videos have been edited on this without any issues so I know it can handle what I'm attempting to do, especially as I've done it many times before.
Is there anyway to resolve the issue? And it seems to be with the transition "scale" at the beginning of the image seen below. I placed "Cross Dissolve" on all of the images at the beginning and end; they all rendered properly and could use final cut without any issues
(There's a video as the base/main file on the timeline, then images that are stacked over the video file. There is cross dissolve at the end of each image and scale transition at the beginning of each image)

Answer 1

No images were included with your post.
Russ