Do NOT upgrade to PosePad v2.5 if you have used v2.0. There is a bug that will lose the pointer to your images. The thumbnails will still be there but the images will vanish from full screen mode. They still exists in the path (I think) so it’s just a matter of pointing to the right path in the code. I should have a fix by tomorrow and will submit it to Apple for review. In the meantime I have pulled it from Sale in the app store.
I apologize for the inconvenience. I had tested this before but had lost my backups of the running v2.0 and couldn’t thoroughly test the upgrade process.