Forcite Angle Distribution

Hi,

I have a polyethylene molecule that I am trying to use the forcit tool to find it's angle distribution.  When I try to run the analysis I get the error.


'Angle distribution analysis failed.  There is no data to preform a distribution analysis on.'


In the forcitew, under structure, it has the file I am trying to analyze so I am confused by this error.  I might be missing something basic.

Thanks,

Larry