I just wanted to mention that the new CHDK build that waterwingz created for SD780IS 100c cameras fixes the disappearing OSD Menus problem.
However, I noticed that when I upgraded to the latest build CHDK fails to create the badpixel.bin file and reports an error after taking two photos during the badpixel creation process. My camera is a SD780IS 1.00C. The problem also occurs with the July 31, 2011 ixus100_sd780-100c-0.9.9-1258-full_BETA.zip build.
The error message is:
Please try again.
On my previously installed version of CHDK (build 0.9.9-1143) the "Create badpixel.bin" menu item worked fine. Back in April 2011 I even did a blog post about creating CHDK raw DNG images
Here is the version info for an older CHDK build that successfully created badpixel.bin files:
Date: April 13, 2011
For testing purposes I unzipped a fresh copy of the old April 13, 2011 CHDK 0.9.9-1143 build and tried it on my camera and was able to properly create a badpixel.bin file using the Raw Parameters "Create Badpixel.bin" command. It worked normally and reports:
bad pixel count: 6484