I have a problem booting from mmc. When I try to boot from mmc the Nokia logo appears and statusbar runs the whole lenght from left to right (before problems the bar run just to the level of A-letter on word Nokia and tablet started). After that the screen turns white and about half a minute later 770 boots itself back to bootmenu. I can boot from flash with no problems. Any ideas what can cause this and how to fix the problem (preferably without reflashing because I have a nice configuration of installed programs on the mmc bootable OS...)?

I am using OS2006 (both on internal flash and mmc, I like to boot from mmc to make 770 fast enough to run Canola), modified Craves SD card, SD kernel from Fanoush and I had also installed the WLAN memory corruption bug fix. The mmc seems to be working because I can access the data on it when I boot from internal flash.

The problem started when I tried to launch Navicore program (which I have used before without problems). This caused the tablet to crash to bootmenu and after that to continuous rebooting.