Multiplying groups

Hi all, How can I create an array of groups along a curve? I’ve an empty group-duplicated: -Groups are a sort of duplication, so I can’t select at the same time the ‘frames’ button (while the empty is follow-constrained) -Empties are not able to have modifiers (so arraying along the curve isn’t a chance) Is there a solution? I’m so confusing by anyone said nothing about this.

You can always create a cube and delete every vertex but one (remember to re-center your origin). Now you effectively have an empty that can accept modifiers.

Great, but I tried that too. The result is the mesh duplicated, but the grouped objects are not affected by modifiers -array neither curve.