I finally got your ticket.
Unfortunatly, as I said in the ticket, the HHs you have sent did not import to Hm3 for some reason. I will need a few more HHs to be able to test this correctly.
You have some more feedback in the ticket on the steps we need to try so we can isolate further on this, but it does seem we will need to thread the needle to get to the bottom of this one.
On closing the error popups: Those popups will always trigger when an app or Hm finds an error that needs to be reported. Now, most of the popup windows save where they were last closed. You can try moving the error window to a more accessible place and close it there. Next time it should open again in the same place.