Excellent :). Thank you so much for all of your help, and the extremely quick turn around with these bugs. You have no idea how much someone like me appreciates it. I love PixelOver, and use it for almost every animation within my games. Whether to create a new animation(s), or apply a custom filter I've made to something I've already made.
NOTE: You've probably caught this as part of the bug as well. But, it doesn't close on me, while dragging in a single static image. I can drag as many single frames in as I want and create separate images, opened within their own tabs just fine. It only closes out on me, while dragging multiple frames for an animation over, while already having another animation tab opened at the top. I've been applying filters to single frame static images, and creating animations from a single static image. Then exporting all with no problems, all afternoon :)
Now that I think about it, it doesn't have that dialog option, for a static image import. That must be why.