Wood Problem.. Skin !

When I open my DS , I get a blue screen up and a complete black background with Its usuals contents . When I press 'start' to change this horrible thing , its freezes !
HELP ;-;
Post Merge: [time]1278341866[/time]
I have a DS lite
Wood R4 , new version
And I have a R4 original

Format micro SD card.Backup games and files first and then format.
Then put files back.

Yep, this means the firmware is screwing up. This happened to me when I made the jump from YSMenu to Wood R4 initially. Simply back up the important stuff, format the card, and put the Wood firmware on.

Thanks :)