Checked Firewall, switched it off for a minute even.
Another thing I have just noticed - In the Easy Printer Care / Color Center, it gives me the options to Calibrate Your Printer, or Display, But the options Create and Install ICC Proffile, Install ICC Profile and Manage Papers are greyed out and not selectable.
Also, if I launch Color Center directly, (there is a shortcut in my Start Menu), it says 'No Supported Printer Has Been Found' - but I can access Color Center through Easy Printer Care.
I have checked the front panel settings on the printer, checking network, its OK, there is an option Printer Utility Software and another called Color And Paper Management - both are set to enabled.
Am starting to panic now, I have a client who needs prints for tomorrow!