Hi Now my winboard64 works fine + crafty64 Ubuntu 10.10 + git cloned wine sources. 1. Install blank Ubuntu 10.10 Desktop Get copiler + dev packages 1. wget http://winezeug.googlecode.com/svn/trunk/install-wine-deps.sh 2 chmod 755 ./install-wine-deps.sh; install-wine-deps.sh Get last wine + compile: 1. sudo apt-get install git-core 2. git clone git://source.winehq.org/git/wine.git ~/wine-git 3. mkdir wine64 4. cd wine64 5. ../wine-git/configure --enable-win64 6. make 7. sudo make install 8. winecfg 9. Wineboot google winboard64: Download and open folder Click "Open with wine windows loader" + Just install. Now You get menu Wine - Programs - Winboard64 Start Winboard64: Winboard64 Startup Dialog: Crafty64+Crafty64 New version 23.3 64-bit crafty gives error in: http://www.webkikr.com/ Have a nice Chess....