Hi, Pencil development is now on
www.pencil2d.org/ ...
0.4 was very buggy so i strongly suggest you, at least, download the 0.5 here
pencil-animation.org/forum/vie… or the latest one here
www.pencil2d.org/pencil2d/#dow… .
One last thing you could try before, is to select the camera layer while exporting and when prompt with the "all file" name the file to *.png which i think it's the default format.
Don't use the .png from the project folder because it'll have the dimension of the drawing on each frame, by that i mean, it won't be the same across the animation...
If you're having problems with .png's, one workaround it's to import a white image to Pencil and placed on the first layer(with nothing else there) so when you export the animation, even with the .png format, it'll have the white background....
These are the quick tips, you should register on the new forum and ask folks there about anything you need..or you can still ask me here
I'd be glad to help if i can