**System Information**
Win8 64bit | GTX680
**Blender Version**
Broken: 2.72 a1d80b9
**Short description of error**
It seems that the Wireframe modifier didn't handle data well after the Cast modifier, unless apply it first.
**Exact steps for others to reproduce the error**
Please see attched image and file.
{F114322}
{F114324}
Thanks for checking.