Gaming Sudoku not installing?

[doughmay]

Hullo! So I was able to downgrade my DSi Sys to 1.4U, and I've been using the ugopwn exploit, to get into twlnf. I got the sudoku dsiware, and attempted an injection with the title.tmd. No red flags on twnlf all files and tickets were verified and installed, However, upon re-entry of the system menu after a restart there is no sudoku present. Am I doing something wrong?

Here is my file structure:
SD:/
SD:/SUDOKU/
SD:/SUDOKU/Content
SD:/SUDOKU/Data

Content has:
Title.tmd
00000000.app

Data has:
Public.sav