Tarn Adams is just blitzing along with making sure his latest version of the exquisite Dwarf Fortress is (mostly) bug free. The next bugfix version has been released, bringing the version number to 39c. It fixes such things as pathfinding causing dwarves to stop performing a certain job, RNG (that's random number generator) issues, fish and turtle options not being available to take with you on embarking, buildings becoming invisible, and countless other problems, from small tweaks to big changes. You can download the new version on the Bay 12 Games site and, as always, your saves are compatible with previous versions.