Mimimwatch just won't start

[chrisbridgeave1]

(16-07-2017 09:58)simoncn Wrote:  This message means that the .jar association is not set up as "Executable JAR file". Because of this, Windows is running the command "javaw mwatch.jar" instead of "javaw -jar mwatch.jar".

OK Thanks - so I have confirmed that by running javaw -jar mwatch.jar at command prompt - Hurray Minimserver launches

How do I "fix" this permanently? Jarfix doesn't seem to and I have "Java™ Platform SE Binary" as the default app for .JAR files