[Catarina Fernandes]

Adding to the thread:

Well, we know that by default, every time you add a still image to your timeline, the duration is going to be 10 seconds. I also got the “bonk” every time I wanted to batch shrink the images. A way of solving this was to change this value in FCP:

Go to ‘Final Cut Pro’-> ‘User Preferences’.
Choose the ‘Editing Tab’ and type a new value into the ‘Still/Freeze Duration Field’.

Of course, than, every time you import it will be at that specific duration, however, it may help you at some times. It surely helped me!