Please update your version of MotionDuck with the instructions below:

We have a short tutorial on how to update MotionDuck here:
1. Please download this version of MotionDuck:
2. Unzip the folder after download.
3. Paste the MotionDuck-r74 folder here:
PC: C:\Program Files (x86)\Common Files\Adobe\CEP\extensions
MAC: \Library\Application Support\Adobe\CEP\Extensions
4. Delete any previous version of MotionDuck.
5. Restart Premiere Pro and the transitions should import.