Problem with ActiveScaffold+RecordSelect

Hello,

i'm using this two plugins.
But i have some problems.

My model is USER belongs_to :avatar.

Error is the follow:

NameError in Admin/avatarsController#browse

undefined local variable or method `field' for
#<Admin::AvatarsController:0x68aae98>

RAILS_ROOT: C:/Progetti Rails/RNetPortal
Application Trace | Framework Trace | Full Trace
Request

Parameters:

{"parent_id"=>"1",
"parent_model"=>"User"}

Show session dump

Some ideas?