So you fixed err99 by factory reset?
Here it goes. Im using the autoexec given to me by ilgucio. I used the .fir, flashed 0.8, and used a card with ML autoexec. Enabled movie mode. But, I would randomly get err99. (yah I know, nothing in programing is random). It was always when I tried to take a shot. Sometimes the first [admin: avoid swearing please] /*edit: shot
*/ after I turned it on, sometimes 10-15 shots in. Power cycling the camera would fix said error. Last weekend I was doing a event, I was running and gunning, and did not need err99 at some critical time. So I used non ML cards. Well on Sunday I went macro and bird shooting, and I used LV for the first time since I stoped using ML cards. Well guess what? No err99, and movie mode is still there.
Also of note is when I first installed ML. I tried bracketing, focus stacking, and a few other still related things. All if them locked the meter, the meter would simply not turn on. Taking out the battery fixed this.
Hopefully this helps. Keep up the great work.
Matthew