aha, apologies folks, just realised.
If your installation was pre - 20160511, which it is for the ones you are reporting
You will need to install the old method, ie format a disk and install.
The reason is that there were some files I could not provide as an update
I will fix this in the next release, but first you will need to install 20160511 the 'old' way
very sorry, but could not be helped.
thx
Lee