Resize top level groups

Running a for loop on all groups in a document. If group parent is a layer and layer is free then clipping mask and resize. Resize function fails as "Error 21 undefined is not an object" on the THIRD group in this example.

Test_001.eps - Google Drive

#target Illustrator

var idoc = app.activeDocument;

var gi = idoc.groupItems;

function meetTheParents(PageItem){

     if (PageItem.parent.typename = "Layer"){

          return "Layer";

     }

}

function isLayerFree(layer){

     if (layer.locked == false && layer.visible == true){

          var gpa = layer.parent;

          isLayerFree(gpa);

          return true

          } else {

     return false

     }

}

for (j = gi.length -1; j >= 0; j--) {

     var iGroup = gi[j];

     if (iGroup.hidden==false && iGroup.locked==false) {

          if (meetTheParents(iGroup) == "Layer"){

               if (isLayerFree(iGroup.parent)){

                    iGroup.selected = true;

                    app.executeMenuCommand ('makeMask');

                    app.executeMenuCommand ('deselectall');

                    iGroup.resize(50,50,true,true,true,true,50,Transformation=Transformation.CENTER);

                    // alert(iGroup.typename);

               }

          }

     }

}

It fails AFTER it does the clipping mask so the for loop is functioning properly. It resizes properly the first TWO times so the resize function is written correctly. If I comment out the resize command and uncomment the alert of iGroup's type name it completes successfully so the identity of the group in question is not an issue.

?!?!?!?!?!?