Did that before my original post. The result does much the same thing, with this difference, it will load an image and one may edit it, without any complaint, but cannot save to any of the formats, the dlls of which gave errors, which is unfortunately, every thing but mac and a couple of other esoteric formats--these are the errors to which I referred originally. Each of the dlls in folder 'file_r' provides the code for saving the images in different formats. All the normal ones, including the native Phierha format, pxa, have dlls which give errors on loading the program. The only ones left are apparently usable in principle, but not by me, or LINUX. It seems as if these have been blocked by some prior claim on the format, possibly in XnView, or FastStone Image Viewer, which I also have installed. These latter two mostly work, but that is no different from the other installations I've done, none of which had this problem. The only difference here is that I have FoxitReader installed, and have hacked it to make an entry on the context menu. I can't understand how this could cause this problem, and am not enthusiastic about undoing it--it was time consuming to do (KDE seems to want to prevent true editing of the command line for this). Hope this is informative, and thanks for your help.