Problem with starting gazebo

I installed Gazebo last week and Gazebo crushed when building a simplified vehicle 3D model. I failed to relaunch it because of the following error: terminate called after throwing an instance of 'std::bad_alloc' what(): std::bad_alloc I deleted Gazebo and reinstalled Gazebo later, but still facing the same problem. I tried methods from this link: http://answers.gazebosim.org/question/18805/problem-with-gazebo-stdbad_alloc/ , while it does not work either. So what should I do to solve the issue? Thanks