HI, > Is there any details on what is not compatible?
Not really, I would guess that 99% of application would compile with no changes. The only minor things I can think of are one or two attributes that were protected or internal that are now public, and I think removeAll was added to IList interface, certainly nothing that would case any major issues. More likely (and that's still very unlikely) you might to run into something that may not work now as your code contains a hack/monkey patch to get around a bug that has been fixed. Thanks, Justin
