Latest PhotoShop CC2017 version will not install

Exit Code 160.

Previous version was working just fine but the latest update has completely screwed up.

I now have no Photoshop installed and really need this to work.

Anybody got any suggestions please?

Exit Code: 160

-------------------------------------- Summary --------------------------------------

- 2 fatal error(s), 0 error(s), 1 warnings(s)

FATAL: Error (Code = 160) executing in command 'SetRegistryValueCommand' for package: 'AdobePhotoshop18-Core_x64', version:18.0.1.29

FATAL: Error occurred in install of package (Name: AdobePhotoshop18-Core_x64 Version: 18.0.1.29). Error code: '160'

WARN: Error Setting Registry - Start 64-bit:1 root:0 key:.api name:Default type:REG_SZ data:Photoshop.PrintingInksFile. Check for Registry permissions. (Error: Error 5 Access is denied.)

All other packages are fine - just this and I did nothing unusual