I'm sorry no one has replyed. Really, I have never messed with guild emblems and stuff. Is this one you tried to create on your own or is it one that was already implemented?
A little more detail would help out us all a lot more. =)
go to , data\property\effect, in there you will find effectdata files, check in them, look for a path that leads to your guild effect's textures, make sure its right, because i think, that item's effect is pointing to that window texture that poped up when u used it.
now I took those effectdata files (53) from another dekaron (on that dk guildmark work)
I tryed on my dekaron, but nothing happends,,
still same empty window appears