some problem when new project IronPythonApplication

Jul 21 at 9:58 AM
My computer's infos

Window 7 64bit
Visual Studio 2010 Ultimate
IronPython 2.7.4
PTVS 2.0

I have some problem make new project IronPythonApplication.

PythonApplication has no problem. It's work.

But IronPythonApplication, this project ocurred next error.

Assertion failed!
.....

I attached screenshot.

Is anybody know about this error?

Image