Hacking Error Installing Theme

[SanzioSan]

I just hacked my friends new LU63 wii with bootmii and everything works fine except im having problems
installing a theme. Im using MyMenuify and every theme i tried with it gets me the same errro. It says

"Error writing to NAND! (ret = -4)"

Can some1 please help?

 

[oxMUDxo]

I use SoftMii Tweak Toy 2.0 and I never have any problems, You do need to download SoftMii themes for you're system menu...
"Themes for 3.2 will brick a 4.0 system menu and vice versa"

Did you're theme brick the Wii when it failed?

 

[ThatDudeWithTheFood]

use the softmii installer god its alot easier and better