Here''s my fix for issue #4946 <http://ironruby.codeplex.com/workitem/4946>: da1abbdba748f0ebdb52<http://github.com/cstrahan/ironruby/commit/da1abbdba748f0ebdb5282f8557549bf260ffd61> However, I''m curious if that''s just sidestepping another problem with the Silverlight build. Before the change, CreateObject will always raise an exception in Silverlight if the baseType implements ISerializable - after the change, it won''t throw when the baseType is RubyObject. Shouldn''t we *always *ignore the ISerializable attribute in the Silverlight build and instead default to the second part of the if/else (the part where we use *theclass** .Context.SetInstanceVariable*)? -Charles -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://rubyforge.org/pipermail/ironruby-core/attachments/20100827/4320d2cc/attachment.html>