If you do an Internet search with Google there are any number of messages like yours about knife.vbx .
I have not browsed them.
My thoughts are though -have you right clicked on the start menu item that starts the program running and selected Properties. Selected Compatability and chosen "Run this program in compatability mode" for Windows 95.
This is what I get when I try to use some of the features in my Escher Interactive. Exploring the Art of the Infinite CD.It?s a very old program from 1996.Yes,16 bits for Windows 95.It worked great with W 98 also.And with the help of XP_FIX.EXE I was able to run it in Windows XP Pro.But I can?t find the way to get it running like with old Windows.Can anyone help?Besides,I was at the site of Thames & Hudson Digital and they don?t even mention Escher! Sniff...