I know the bricks were caused by the brick code present in 2.0b2 and version 3.0 is based on 2.0b1 . But r4 web tells to not use the 3.0 , and in a mail I sent them they told me they got some report of brick in 3.0 although I haven't seen any on forums. Are there people using this version to have the max compatibility and not having problems?