Photoshop CC Installation issues

I am having problems installing Photoshop CC (Trial Version), it appears to successfully download but then fails installing an update - I get a U46M1P6 error on the update installation.

Even though the installation appears to install successfully, whenever I try and open it I get an error message.  I have run the Adobe Support Advisor software and no issues have been found.

System details:

Error shown on Creative Cloud:

Error shown when trying to launch PhotoShop

Report from Adobe Support Advisor:

Any advice gratefully received!