Default PPP Widget no longer allows internet access with Katkiss 4.3.1_027

I have searched the forums for a solution to this problem with no success. I am running Katkiss 4.3.1 on a TF101 and have successfully used PPP widget to connect to the internet via a Huwei K3770 USB sim card. However, this has stopped working since I upgraded to Katkiss 4.3.1_27. I can dial out and connect to the internet, but am unable to access information on the internet (Gmail, Chrome browser, etc) - get an error message stating that there is no internet connectivity. So it seems that dialing out and "connection" to the internet works, but I cannot actually access the internet. Any assistance with this will be most appreciated - I suspect that something has changed in the upgraded ROM that prevents PPP widget from working properly.