Update: The Fix is to install to C:Evolution GamesDekaron Evolution rather than to C:Program Files. This means that you can manually update using the manual patch at: Recent Update
When installing the Client found here: http://evolutiongames.net/dekaron/
It said it needed the (dot)NET 3.5 support and the Microsoft page provided an installer for (dot)Net 4.0.
The system is Vista x86 SP1.
Error Boxes in Order