I just published CheckerBoard 1.651 on my webpage. This release fixes four things:
1) a serious synchronization bug between the multiple threads of CheckerBoard, which could show up in autoplay and engine match mode; on my two newer machines that I usually use for development, this bug didn't show, but on my oldest machine it was very obvious. Even if the bug didn't show clearly on the newer machines, it is possible that it affects engine match outcomes - an upgrade is therefore strongly recommended if you run engine matches.
2) a small bug with graphics updating when changing the piece set (the board would update, the pieces only on the next window resizing).
3) export to HTML now also works from setup positions for Italian checkers (it always worked for English checkers)
4) I forgot to include the file 11man_FEN.txt which is used for 11-man engine matches. It contains 2400 of the 2500 possible 11-man starting positions. 100 of the positions are omitted, because they are likely wins for one side. The newest release includes this file, so that 11-man engine matches with 4800 games can be run (if you have the patience...) for better statistics than with standard engine matches.
If I get no negative feedback on this release, I will also publish the source code of CheckerBoard, since I find it increasingly difficult to find the time to work on CB - making the source public is a better alternative to stopping the development altogether.
But now, enjoy your bug-free 11-man matches!