load error

[dudie_cg]

I have a problem
Anybody please help me...


undefined method `display_name' for nil:NilClassundefined method `display_name' for nil:NilClassundefined method `display_name' for nil:NilClassundefined method `display_name' for nil:NilClassundefined method `display_name' for nil:NilClassundefined method `display_name' for nil:NilClassundefined method `display_name' for nil:NilClassundefined method `display_name' for nil:NilClassundefined method `display_name' for nil:NilClassError Loading File VRayForSketchup.rb
undefined method `display_name' for nil:NilClass