If you have Norton Unerase (or perhaps another utility) and find you've just overwritten your Poser file with a bad version, or made a change you didn't really want to save after all, stop what you are doing, don't save any more files, then go look for a file named pzSav_(your filename here) in the erased files. You won't see this file in the recycle bin, or at least I don't; I must use Norton to view erased files and restore them. Poser saves the original file temporarily as it is writing the new version of the file, then it deletes the temp file.