Regarding the older version of Engine.exe
First off, its not a hack.
What is it? a Tutorial
lolz made a post on how to get an older version of the Engine.exe file.
Since that time there have been a TON of posts under the help section, general section, and under the hack section itself on about "How do i do it?"
If you dont know what you are doing by even a little bit, do NOT mess with the Engine.exe file
I think what is happening is noobs (some not all) are coming in here, seeing the word hack, and then following the directions in the post with out any regard. Soon after this, they post about how it dosnt work, or there Engine file is gone, or changed, or corrupted.
Notice i said SOME.
Point being, if you dont know what the hell you are doing with it, dont even THINK about TRYING it. Just look for a different hack. (TNT is working btw)