I followed the installation instructions, got the results it said I should have, but then on the user login page, there is this error in red...

* The Version of the installed module in the Admin UI is v1.4.1beta1 and the one of the package is v1.4.7, Remove/Reinstall the module* The Cart is empty
I do not know why I'm getting this. In addition, when I try to do a test purchase, I get as far as selecting my payment method and google checkout is not in the list. It is only giving me the PayPal option which is all I've used in the past.

Is there anyone that can help me?