Nah its not your client I dont know how to fix it but if i find out how to fix it i'll make a guide for it
Ill download CoEmu again later and set it up and figure out what the problem is..
Oh and sorry Emme when someone uses this they dont ever post or anything and then I saw some people with this problem and thanks for Merging it if thats a way to put it
EDIT:
Made that guide