the .dll is fine the exe is the problem and seeing the exe is just a injector all you need is a decent injector,
Now here is a link to a simple injector called winject that i have uploaded for you all.
**********: Easy Filehosting
now download and extract to you're desktop and follow these instructions
step 1:
open winject, now see where it says target process? this needs to say Engine.exe
but the list will only show the current running processes so here is what you need to do,
go to where you have combat arms on you're computer most prob C:\Nexon\Combat Arms
and click on engine.exe this will start the process, now as soon as you do this go back the the list and you will see engine.exe click that.
now step 2:
we need to load the .dll so click on the .dll to inject tab and find where you put the SimpleCharms.dll
step 3:
start combat arms and when hackshield comes up in the corner click inject!
congratulations you have just injected the .dll manually,
enjoy the new hacks and thank me if this worked for you.