ES 1.4.3 Install, stalls at 0%

Hi SI Team

I was advised to upgrade to ES 1.4
As I was running into template issues.
I tried the standard upgrade from the ES Component in the Joomla back end.
This failed.

I was advised to go to the dashboard on the SI site and download there.
Which I did.
This failed.

What ever is going on the installation is stalling at Step 4
Downloading Installation Files...
at 0%
It has been stuck at 0% for 15 minutes now!

Please advise

thanks in advance

Paul