It seems that I am dumb, jinxed or something !
I download the zip file to the desktop & open Card Tricks & load the card this way.
I have placed the locked card into the camera & turned on in play mode.
The Canon Icon appears, then a large number 1.83 goes 'POP' on the screen & everything goes blank !
I have gone over the instalation a few time with the same result.
Col