Map objects now show in the map objects tab; I had commented out the line that added them, because I was trying to fix another bug (if you deleted an object, then added a new one, it crashed). But all of this is fixed now. As for the preview... hey it's surely possible to make the XP-like thumbnails work... not sure how it's done, but some files like pdfs, autocad drawings, and some others have a preview thumbnail, can't see why we couldn't do it for lvls. If the thumbnail picture data itself must be in the file, then it might be a problem (would have to embed it in the file as a eLVL chunk); but if it's stored in thumbs.db, then it could work... If that fails, I could add a separate 'map explorer' or something; not sure how efficient generating thumbnails on the fly would be... Might have to store thumbnail picture in the lvl directly anyway. To have this inside the open... dialog itself would require quite a lot of tweaking, and we can't edit directly that dialog since it's a common control. So we'd have to create our own one complete thing, which brings in possible new bugs, etc. Which is why a separate map explorer (from which you can still open maps) might be more appropriate then to replace the open... dialog. Well if the explorer turns out awesome, we'll replace it. Does anyone know anything about making XP (or Vista) show thumbnails of non-image files?