Versions 1 to 7 work well with the windows version. In multifrac_8 I added some addtitional code and variables which were needed for the reset commands which handle the transitions between the participating programs. They are resposible for the lack of chaotic portions and supply joint centers in images done with the latest edition. Versions 8 to 10 produce a "Buffer Overrun" as soon as they are loaded and Fractwin crashes instantly. Therefore only users running clean dos can load multifractal, only a few are left. I run multifractal also in the DOS Shell but I need a modified XP Version without net services. I?m sorry to say, that Richard refuses to increase the internal buffer, possibly only 1 line in the source code "STACKSIZE 7684 ; was 7172" and then recompile it. My bugreport is dated Aril 19, 2011 and when I sent a reminder was told to issue a new one, that?s all. The source code is available from http://iteratedynamics.codeplex.com. Can anybody help, maybe Jonathan ? I can imagine some more activity in the forum wouldhelp it survive a little bit longer Albrecht