Where is my error log?

By Operating System

This is probably one of the most oft asked questions Users ask of Developers when Developers are trying to figure out why something doesn’t work for the User.

For your convenience we happily provide you the location of your error log here.

On Linux

  • in ~/.VASSAL

On MacOS

  • in ~/Library/Application Support/VASSAL

Note that this directory could be hidden in Finder. Users should check whether it exists from the command-line.

On Windows XP

  • in C:\Documents and Settings\<username>\VASSAL

On Windows Vista, 7, 8, 10

  • in C:\Users\<username>\AppData\Roaming\VASSAL

From the Module Manager

The error log for the current run is also available under Help > Show Error Log in the Module Manager. Note that starting the error log is overwritten when the Module Manager is started, so if you need to see an error log from the previous run, view it directly rather than starting the Module Manager to view it.

Opening Error Log Directly From Chat

From Vassal 3.6.5 onwards, typing /errorlog open in the chat bar will tell your OS to open the Errorlog in a default viewer.

As far as I can tell on Windows 11 there is no AppData folder, and I can seem to find where the log files exist.

How are you checking for it? If you’re looking in the file explorer and you have it set not to show hidden files and folders, you won’t see it.

See for example

Or search for “Windows appdata access” or similar, or see How to report problems

Yours,
Christian

It would still be good to edit the initial post to reflect the fact that this folder in Windows is hidden by default (as was done for MacOS).

Thanks for posting this link, it solved my problem.

How to access hidden folders – Ableton