CheckerBoard 1.64 beta 2

I've updated the CB 1.64 beta which you can download as http://www.fierz.ch/CB_setup_164.exe (1670 KB). It doesn't have a new version number but it displays December 2 as date in the status bar on startup. I have a particular question: one user reported that the "add comment" feature wasn't working - he would add a comment and that would just disappear. Does anybody else see this problem (because I don't...)?