# ODE with solver type "world" crashes

Hi all,

With the following:

```
<physics type="ode">
<gravity>0 0 -9.8</gravity>
<ode>
<solver>
<type>world</type>
<min_step_size>0.001</min_step_size>
<iters>50</iters>
<sor>1.3</sor>
</solver>
</ode>
</physics>
```

Gazebo 1.9 crashes when a simple box is placed on the ground plane. Reducing the number of iterations did not solve the problem.

link explains a similar problem but does not answer the question fully.

Any help would be appreciated.

Thank you