Mimimwatch just won't start

[skeptic Mike]

(16-07-2017 21:26)simoncn Wrote:  

(16-07-2017 16:47)chrisbridgeave1 Wrote:  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

It is not the default app that is wrong. The problem is the Description column in the list of filetype associations. For .jar, this column should say Executable Jar File. If it says something else (such as JAR file), you will get the problem you are seeing.

I have never seen this problem myself although it has been reported by other users. If you uninstall Java, what do you see in the Description and Current Default columns for the .jar file association?

What do you see if you tyoe the following into a command prompt:

assoc .jar

It should normally be:

.jar=jarfile

and then, checking what jarfile is associated with is done by:

ftype jarfile

which should show:

jarfile="C:\Program Files\Java\jre1.8.0_131\bin\javaw.exe" -jar "%1" %*

If this isn't what you see, something odd has happened to the Java installation, if it is, then the installation is probably ok, and something else has gone wrong. It's possible to modify the file associations for a user, which might account for the behaviour you see. This doesn't seem to be picked up by assoc and ftype, which seem to show the system-wide (i.e. default) associations.

You can test this by trying to start MinimServer using a different user account, if it starts normally using another account, then we know that the problem lies in your profile.