I have found the problem witFrench Grade 2. It has to do with the use of the class opcodes and is a case of new features breaking established ones. It happened some years ago before I was fully aware of this problem and of the need for testing. I'll have it fixed in a few days. Meanwhile, could someone refresh my memory of the C operators for exclusive or and complement? Or should i be slogging through the manual? Thanks, John -- My websites: http://www.godtouches.org http://www.jjb-software.com Location: Madison, WI, USA For a description of the software and to download it go to http://www.jjb-software.com