4.10 Official Release

[EJGr.Ost_Caspar]

Originally Posted by Lensman_1

Exactly the same thing is happening to me and I cabn guarantee you that I own a legitimate purchased copy. I'm installing over 4.09 and the files unzip then the installation bar gets to about 80% and the installer just vanishes. Starting the application reports it is still 4.09.
Anyone else having this problem please?

That sounds much like a broken file. Did you try to re-download?

You know, you can extract the files (by the installer) to any folder you want to, and copy the files from there to your game folder later.
So you maybe can see, if the installer work at all or how big extracted files are.
Just as a hint.