I am trying to save a .ai file for someone else to use, but when they open my file the layer structure and grouping has been reduced to Layer1 -> <Group> ->all layers. The other person uses CS6(PC) and I use CC (Mac), so i have tried saving as pdf,cs6 with pdf, cs6 without pdf and none of the methods keep the layers or grouping preserved. It's a mess and completely unusable because the other person can't sort through the layers. I haven't been able to find any discussions for this problem that have been resolved and it's starting to frustrate me.
Can anyone tell me where the problem is here?