Jonathan, Sorry to bother you with this, but there seems to be a bug in the 'render-to-disk' mode (or, in my case, to XMS), which more or less clobbers the calculated image. This kicks in only if used *directly after startup* of Fractint and only in a certain range of image line lengths: Everything is ok on my machine up to 2048; the first undisturbed picture I get after that is at 4800 x 3600 (haven't checked precisely, this is simply the first higher disk mode in my fractint.cfg that works again). Switching to one of the "bad" modes after having already finished/interrupted another image makes the bug disappear (even an internal start with <insert> doesn't change this). Almost forgot: Fractint 20.04 patch 4 on MS-DOS 6.22, (very) old Intel Pentium MMX 233 MHz. The par below isn't really necessary, but that's what I used checking through the offending disk-mode resolutions. Regards, Gerald --------------------------- PAR FOLLOWS --------------------------- Bug {;After start use 'Disk'-mode with line-length > 2048 ;Fractint Version 2004 Patchlevel 4 reset=2004 type=mandel passes=1 corners=-2.5/1.5/-1.5/1.5 params=0/0 float=y maxiter=256 bailout=100 inside=0 symmetry=none } ---------------------------- END OF PAR ---------------------------