"failed to create dimension ..."

I am unable to dimension anything in the attached part. I first noticed the problem when I was making a drawing from this part and was unable to dimension a detailed view. Then I went back to the part and tried to dimension the holes and spacing but it keeps saying "Failed to create dimension for selected face or feature" for any of the holes or outer diameter.  Please help. I'm using SW premium 2009, SP 4.0

SolidworksTolanalyst And Dimxpert