cannot install minimwatch

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cannot install minimwatch
Hi,
I've successfully installed minimserver 2 on my Synology NAS and verified it works by accessing it via the Synology Audio Centre, which is rather clumsy for general use. I attempted to install MinimWatch on my Win 10 PC and hit the following issues.

1. The download page fails when I use my regular browser (Palemoon, a Firefox variant).
2. I was able to download using Chrome but the install failed being unable to open the .jar file
3. I downloaded and installed Java from the Oracle site. After this, neither chrome nor firefox could complete the installation.
4. I tried opening the downloaded installer with Internet Explorer. This got as far as attempting to open the jar file but failed at that hurdle.
5. I attempted to redownload the installer with Internet Explorer. This failed with an error 3.
6. I attempted to redownload with firefox (latest version). This succeeded but the installer failed again attempting to unpack a jar file.

I am completely out of ideas. For what it is worth, the installer page will only offer me the 2.08 version.

Any suggestions would be appreciated