Green Phone Button Stopped Working

[jminor]

is there a Registry key(s) to view to check or make this button access the Phone or the functions of Dial? It stopped working on my last upgrade to 6.5, and I thought it was a problems with the new OS. I have now reverted back to 6.1 and it still doesn't work. I can't answer the phone with this hard button and I cannot bring up the dialer either. I have made the green phone button another button using HButton, and I made the green button access the Calculator using AEButton Plus. The calculator does not come up when the button is pushed, but I can make the phone come up, but not dial. This may be related to a problem when I do Phone Code Data ##3282#. The phone goes to EPST then quickly goes to the dialer so I can't do any troubleshooting. I posted this to xda too. Help Please