Rebuild errors

Hi. I've been getting this rebuild error... Unable to create instances for the pattern. Try again by decreasing the number of instances or the distance between instances. In this particular case it's 2 simple O-ring grooves concentric to 12 colinear holes 1.71" apart (see attached). How intensive is that? Does SolidWorks prefer I pattern the sketch geometry? Thanks.

SolidworksGeneral