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After an update the program does not start anymore.


After starting the program nothing happens. No window opens.

Possible causes:

  1. An error occurred during the update process.

  2. Out-of-date Java version


First, please re-install the newest PlayCatan Access Software (formerly: COW client). You get the actual installer from If the problem persists, please check your Java version and install the latest release from

If this still doesn't help, please send in a mail with a short comment on the problem and the err.log file.