L2J Server

Type mismatch: cannot convert from Collection <L2Character> to Set<L2Character>
got this error on Changeset 4144 update

oh and I tryed to compile ...

compile:
[javac] Compiling 1461 source files to C:\Users\Admin\Desktop\work\L2_GAMESERVER\build\classes
[javac] C:\Users\Admin\Desktop\work\L2_GAMESERVER\java\com\l2jserver\gameserver\model\actor\L2Character.java:2249: incompatible types
[javac] found : java.util.Collection<com.l2jserver.gameserver.model.actor.L2Character>
[javac] required: java.util.Set<com.l2jserver.gameserver.model.actor.L2Character>
[javac] _attackByList = new FastSet<L2Character>().shared();
[javac] ^
[javac] 1 error

BUILD FAILED
C:\Users\Admin\Desktop\work\L2_GAMESERVER\build.xml:62: Compile failed; see the compiler error output for details.

update libs.

lol thank you, it works!