Hello I'm having a lot of problems when rebuilding my models in different configurations, in some cases I have to suppress a feature or a sketch and then unsuppress it to force it to rebuild properly, this is happening with models that have 7 to 14 configurations and happens when switching between them. I try every time to rebuild using ctrl+q several times; it doesn't work, I try as well to rebuild them using configure feature and when in the tab I click on rebuild all the configurations, but again it doesn’t work. The only way that it works is by suppressing and unsuppressing. Can it be possible that the problem relies on my Laptop, I have a Dell M4600 Win 7 64 bit, 8 GB of ram, 128 GB SSD, Nvidia Quadro M2000 and I’m using SolidWorks 2013 (I upgrade from 2012 to try to solve the problem). I’m thinking to upgrade to win 8 64 to see if this solves the problem.