It's hard to tell definitively just from this, but I've seen a small handful of people having problems with similar symptoms due to a corrupted Java installation. If that is the case for you, it may help to uninstall Java and install a different version.
If you want to debug a bit deeper, you should start the launcher file in a command-prompt, where it might dump some errors if there are any. To do so, open a command-prompt, navigate to the directory in which you put the autohaven.jar file, and run it with
java -jar. For example, if you put the file on desktop, and the file is named
autohaven-alizzz.jar, you would do the following:
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cd Desktop
java -jar autohaven-alizzz.jar
That may or may not then output some error messages that might be useful. Please also include the output from the following command:
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java -version