When making a help thread you should specify things like your source.
Making a wild guess here.
Your server is denying moparscape in mid login because the UID doesn't match, i.e; moparscape client generates a random one from 1 - 99999999 and the source you're using is UID specific.
Basicly what you need to do is go into client.java and search "int UID" without the quotations, where it says if(UID remove that whole code in between the brackets.