There was a problem setting up the Paypal payment:"The token is invalid"

Hi There,

Today after "Pro sites" update I was testing with paypal sandbox my site, and get this error after purchase.

There was a problem setting up the Paypal payment:
"The token is invalid"
Please try again.

Payment was done, all functions user can access ( premium templates and plugins) and after i came back to user account settings, everything was ok.

Is that a bug in paypal or plugin ? or what ?

My site http://www.theblogger.com.au