[Help Request] Cshell.dll problem

actually i had alot of problems with dlls lately so i decided to get all my backup from a working client and that worked but cshell aint working i already replaced it in crossfire folder and it still say file is changed so anyidea how to fix that?

i dont have a skype and btw i already have the working cshell but i dont know why it doesnt work,i dont know if i should place it in other place