I happened to have a Windows Explorer window open while I was saving a Poser document, and I noticed a file appeared named pzSav_filename.pz3 where filename was my original filename. This file grew in size until saving was finished, then disappeared; clearly a temporary file. I restarted Poser because I wanted to clear out the texture list, and saved my second document after working on it. This time, the pzSav_ file didn't appear. Instead, the original file grew in size. Poser was writing over it. Both these files were about the same size (~20MB). I wonder what caused Poser to make a temporary file the first time, and not the second? It seems to me that the temporary file method is safer; if anything goes wrong, the original file is likely to remain untouched. But if there's a glitch of some sort, and Poser chooses to write over the original file, it can end up truncated or corrupted. Never happened to you? You haven't been using Poser long. :) Has anybody else seen this? This is Poser 4.03. It would be interesting to find out how to make Poser always use the pzSav method, but I haven't found how to do it yet.