So, I've recently starting playing again after some time, and I've found that I can't open the latest version of KoLmafia on my computer. I've downloaded all the files from the github and put them all in one folder, but nothing happens when I double click the .jar file, and I don't know what I need to do to open the .deb or .dmg files. Any help would be appreciated, and I'm running windows 10 in case that's important.
Unable to start program
- Thread starter Damien
- Start date
Do you have JAVA installed? We specifically need v17 or newer.
wiki.kolmafia.us
Installation - Kolmafia
Magus_Prime
Well-known member
If you are running Windows 10, and Java is properly installed, you should able to open a command prompt and type
If you get back something like the following:
Then you should be good to go. I normally run the .jar file directly from the Windows "Run" command.
It's good. It means that the command line can find java.
The next step is to go to the directory that the KoLmafia jar file is in and type
java -jar KoLmafia*.jaryou can use the actual jar file name, but the wildcard helps if it's KoLmafia-2345.jar, etc...
If that runs, then you can play! You'd still have a problem getting Java to work with the Windows GUI.
Which is a general problem with your Java install. Java is a strange beast on Windows, and I am not a Windows user, so my only recommendation is googling "java jars won't open windows 10" and make sure you're looking at a recent result. You can easily find 11 year old advice on using Java 1.4.
You should open a command line before typing that, but it is still a useful thing to do. Mafia detects some errors on startup but they only go to the console. If you aren't running from a command line you never seem them. Some of those errors are fatal. A common one on Windows is that mafia is being run from a directory where it cannot create files.
The presence or absence of various mafia created subdirectories can be a diagnostic.