I have difficulity in make good use of the CHDK in my S2 IS camera. Two very useful functions are not working well: 1. when I update the CHDK to pre14.grand148.md.cln.zsm-s2is-100f-119 or 120, I cannot use video recoder (it will hang my camera), but pre14-s2is-100f-148 did work. 2. when it is in "alt" mold (try to run a script). I am writing a script try to get the exposure information in the Av mold by: [press "shoot_half"] [sleep 3000] [get_tv f] but always get the f value to 15 with different light condition. Anyone out here using S2 IS GM1.00F and working?