We found a couple of mistakes in the Box2D integration in  IwGame 0.28, so here is the fixed version, changes include:

• Actor / scene Box2D implementation switched from multi-inheritence to composition
• Bug Fix – Fixed issue with incorrect actor orientation when placed under Box2D control
• bug Fix – Values for velocity, angular velocity etc were not being applied in XOML

You shouldn’t need to change any of your game code with this update.