I use custom properties to drive pattern instances (The selection in the Value/Equation box is a file property). Since upgrading to 2012 SP3.0 I have noticed errors in the flat patterns. When I researched the problem, I found that when the part is in the formed configuration, the equations work properly and there are no errors shown in manage equations. In some parts, the flat pattern configuration number of instances do not change to the revised quantity. If I set the configuration to the flat pattern and select the 'manage equations', the Value/Equation is now red and states the value is an 'invalid global variable' (whereas before it is a file property). Has anyone else run into this issue? Does anyone know of a workaround?