Collectible Card Game Headquarters

I tried to update my client from 1.4.4v6 to 1.4.4v8 but there comes always this message:

Before this, I had updated my windows version from 7 to 10. So I tried to delete and download everything again, but the download didn't start either (I have another java version installed):

I tried to run also java as admin, disabled firewall and anti-virus programs - still no success.
Any ideas what might be the problem?

And you have no problem to download the files manuelly from the links?

xmage_1.4.4v8.zip
xmage_1.4.4v8.zip

What error message is written to the launcher log file?

I can download the files but it still does not work.
Here the error message written to the log file:

also these messages appear after running it for a second time

can you please help me with the problem? I really don't know how to get Xmage working again.

Note: Xmage's own Java version was deleted by the launcher and also could not be downloaded again when I tried to run it (I deleted unintentionally the installed.properties file).

Seems like the user has no sufficient rights to write to the folder you use for xmage.

So best you copy the launcher jar file (XMageLauncher-0.3.4.jar) to a folder in your user directory (e.g. create a folder named xmage).
After that start the XMageLauncher-0.3.4.jar within this folder to download and install xmage.

Thank you now everything works again!