Are you
extracting the zipped files before loading them on the card? May seem a stupid question but ... first things first!
To avoid possible confusion, format the card in camera if you're not confident of what you're doing.
Are you sure to load the (unzipped) DISKBOOT and PS files to the root of the card? That's directly to where you see the drive letter. (Like J:, K:)
You will not be locking the card until after you have CHDK on camera and you are able to get the CHDK menu up.
It's hardly likely that CHDK won't work on your camera if you follow the steps carefully.
If you'd like to start with a less complex build I suggest you go to GrAnd's build @
Downloads - CHDK Wiki. There you can get used to the way CHDK runs on camera without too many distracting functions. The latest Allbest will then seem easier to use when you are practiced and ready.
I'm just giving you what I needed to get going. Although I'm +90% in the dark I have CKDK up and running happily. I use RAW, Zebra, DOF Calculator, Bracketing, Remote Cable, Intervalometer, and Motion Detect - don't need much else - like to keep things simple.
Persevere!
carlos
