I downloaded version 2.0.6a and found several problems.
If you add multiple frames, then they are added in the opposite order.
For example filenames 1.png, 2.png, 3.png.
After the addition of: 1 frame = 3.png, 2 frame = 2.png, 3 frame = 1.png
When a file is created .car fifth frame appears black background.
At the editing stage:

After you save:

Image files:
http://rghost.ru/download/8lCmymyBv/704 ... 0f/Cat.zip