Unfortunately this doesn’t seem to help.
I added the 256mb memory define in wp-config file.
Does it matter where in the wp-config file it goes?
checked the debug line was correct
Assume that the other settings are OK as the current version works OK, it’s just upgrading that’s the problem

Deleted the old theme
Cleared the cache in Chrome
Tried to install update but got the same message

‘The link you followed has expired.’

I’m not sure what you mean by a test page.
There is no option to activate the theme.
In the status for the old version it shows a registration key, with an option to re-set, but not sure what that would do.

Re-installed my backup copy to get back to where I was at the start.

Not sure what to do next.
By the way I have deleted the Newspaper theme from the current live site, so there is only one active copy now working on the local host. Just cannot seem to update it.

Any suggestions?

I don’t have a logotxt.php file in my installation of Newspaper. It looks like the fix you provided is for newsmag. Where would that go in the Newspaper installation.

Plus I’ve create my own background header image but what size should it be, I’ve tried this and as you resize the screen the header graphic no longer fills the screen. Can’t send you link as I’m doing this on a local server whilst the old site keeps running.