I had the best success reverting back to SapSetup patch 60 with core patch 2 on SAP GUI 7.40 client side. I had updated my Installation Server to SapSetup patch 69 and core patch 5. Otherwise I would get the error: This package cannot be installed as it is incomplete on the installation source.
I haven't splayed around with the Silent install option on the server side. I would prefer the clients not have to select anything.