Make your own theme with uot kitchen

First of all: Hello to all on this forum.

my phone's info:

(T-Mobile) Samsung S 4G T959V (NOT the blaze nor vibrant!!).

My Problem is this:
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I'm running the stock firmware:
VUVKD1, Froyo 2.2.1 (windows 7 ultimate x32 bit)

the problem:
my "TW Launcher" is corrupt. what i mean is this:
once i turn on the phone, as soon it starts up, i get: "The application TwLauncher (process.com.sec.android.app.twlauncher) has stopped unexpectedly. Please try again.

Can someone help me find out how to fix this issue........it does this ALL THE TIME CONSTANTLY!!! it's to the point where i cannot do anything....the only time it dont do it much is when my lock screen is in effect, but as soon as i start to unlock it....it goes back to the same thing forever....i would like to install CMW10, and root it because i have Simple Mobile service