Ok solved refreshed API number in Octoprint Saved it then copied it back into CURA then disconnected and reconnected it then it appears to be working!!!
I looked in the log files when it was failing and although I had the correct IP address in the Box above ending 0.15 the log showed 0.15 I assume this must be from not updating the API correctly. Although I dont understand how CURA could see the webcam but not connect to printer
Ill see how it goes - thanks for help