Request interface by dreadz .u file

[justvisit]

hey, i downloaded the dreadz interface,  the problem is , i cannot seem to work it on my server,

every time i log in and press start after character select i get an error , Only when i dont use the file Interface.u and i put the orginal file from my server, the game is running , but the problem is without this file, nothing works on dreadz interface, not the skills icon above head or anything. i dont know anything about editing files so i cannot figure this out, anyone with knowledge could help me maybe? thank you