Whaaaaa. That's a different one. Why is png needed there? 
In any case, it seems to be needed, so it looks like this is something that is related to your other thread here: RStudio Connect QuickStart - install.packages() Issue - #2 by cole
We need to get you a way of installing packages in your offline environment, so you can install png and odbc.
Thanks so much for bringing all of this to our attention!! Future users of the QuickStart are going to be super grateful for all of the bugs that they won't experience as a result of your reporting!! 