sx40hs-100i-1.0.0-1820-full
OK, here's a test build with capt_seq disabled.
This is *not* a fully functioning CHDK, it's just a test that might help us narrow down where the problem is. Most CHDK shooting related features (overrides, bracketing, raw etc) will not work with this build.
If you can take test shorts with this build, and without any CHDK, that may help us. Please upload the original files like you did on the previous shots.