Hi tlcjlc. I'm sorry you are having problems with you tablets. I'm not familiar with your tablet and see that we do not have a designated support area where you might seek help.
A parsing error across both tablets lends one to think it can be fixed with a setting change of some sort. Here is a link to a general Android support area where you might ask for help. Android Lounge - Android Forums
Just ask in there by starting a new thread. I'm very sorry I am not of more help but our friendly members will likely know what you need do to fix your app store woes. Best of luck to you and thanks for using these forums.