InRoads ss3: Civil Geometry fatal error

Hello,

I am struggling with a following problem:  

I have a simple geometry developed with CG tools: main way and side way. The side way is perpendicular to main way. When I move side way CL toward the curve set software stop responding when the begining of spiral is achieved. However when I slightly change the skew angle of side way CL (eg. from 90 deg. to 89 deg) the problem will not occur.

Please find dgn file in attachement. Can you confirm that it happens not only on my PC?

Thanks,

Adam