This is the offending error. It alludes to a problem with a board.
2018-03-12 08:52:29,543 [17-AWT-EventQueue-0] ERROR VASSAL.tools.ErrorDialog -
java.lang.NoSuchMethodError: VASSAL.build.module.Map.getFullLocationName(Ljava/awt/Point;Z)Ljava/lang/String;
at furutech.PickLocationName.PickLocationNameListener.mouseClicked(PickLocationNameListener.java:63) ~[na:na]
at java.awt.AWTEventMulticaster.mouseClicked(Unknown Source) ~[na:1.8.0_161]
at java.awt.Component.processMouseEvent(Unknown Source) ~[na:1.8.0_161]
at javax.swing.JComponent.processMouseEvent(Unknown Source) ~[na:1.8.0_161]
at java.awt.Component.processEvent(Unknown Source) ~[na:1.8.0_161]
at java.awt.Container.processEvent(Unknown Source) ~[na:1.8.0_161]
at java.awt.Component.dispatchEventImpl(Unknown Source) ~[na:1.8.0_161]
at java.awt.Container.dispatchEventImpl(Unknown Source) ~[na:1.8.0_161]
at java.awt.Component.dispatchEvent(Unknown Source) ~[na:1.8.0_161]
at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source) ~[na:1.8.0_161]
at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source) ~[na:1.8.0_161]
at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source) ~[na:1.8.0_161]
at java.awt.Container.dispatchEventImpl(Unknown Source) ~[na:1.8.0_161]
at java.awt.Window.dispatchEventImpl(Unknown Source) ~[na:1.8.0_161]
at java.awt.Component.dispatchEvent(Unknown Source) ~[na:1.8.0_161]
at java.awt.EventQueue.dispatchEventImpl(Unknown Source) ~[na:1.8.0_161]
at java.awt.EventQueue.access$500(Unknown Source) ~[na:1.8.0_161]
at java.awt.EventQueue$3.run(Unknown Source) ~[na:1.8.0_161]
at java.awt.EventQueue$3.run(Unknown Source) ~[na:1.8.0_161]
at java.security.AccessController.doPrivileged(Native Method) ~[na:1.8.0_161]
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source) ~[na:1.8.0_161]
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source) ~[na:1.8.0_161]
at java.awt.EventQueue$4.run(Unknown Source) ~[na:1.8.0_161]
at java.awt.EventQueue$4.run(Unknown Source) ~[na:1.8.0_161]
at java.security.AccessController.doPrivileged(Native Method) ~[na:1.8.0_161]
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source) ~[na:1.8.0_161]
at java.awt.EventQueue.dispatchEvent(Unknown Source) ~[na:1.8.0_161]
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source) [na:1.8.0_161]
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source) [na:1.8.0_161]
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source) [na:1.8.0_161]
at java.awt.EventDispatchThread.pumpEvents(Unknown Source) [na:1.8.0_161]
at java.awt.EventDispatchThread.pumpEvents(Unknown Source) [na:1.8.0_161]
at java.awt.EventDispatchThread.run(Unknown Source) [na:1.8.0_161]
I also see these errors:
2018-03-05 13:44:51,271 [42-main] INFO VASSAL.tools.image.tilecache.ZipFileImageTiler - Starting
2018-03-05 13:44:51,371 [42-main] INFO VASSAL.tools.image.tilecache.FileArchiveImageTiler - Tiling bdKR.gif
2018-03-05 13:44:52,145 [42-main] INFO VASSAL.tools.image.tilecache.ZipFileImageTiler - Exiting
2018-03-05 13:44:52,215 [9-AWT-EventQueue-0] INFO VASL.build.module.map.boardArchive.BoardArchive - Unable to read the board metadata in board archive bdKR
2018-03-05 13:44:52,217 [9-AWT-EventQueue-0] WARN VASSAL.tools.logging.LoggedOutputStream - [Fatal Error] :1:1: Content is not allowed in prolog.
Remove the KR board from your boards folder and see if that fixes it. If not point to an empty boards folder and see if it stops.
BTW you also have some duplicate extensions:
2018-03-05 13:44:26,421 [9-AWT-EventQueue-0] INFO VASSAL.build.module.ExtensionsLoader - Extension Id for SniperFinder.mdx (79f) conflicts with previously loaded extension C:\Users\Jazz\Documents\ASL\vasl\extensions\sniper-finder.vmdx
2018-03-05 13:44:26,101 [9-AWT-EventQueue-0] INFO VASSAL.build.module.ExtensionsLoader - Extension Id for festung-budapest-1.2.vmdx (534) conflicts with previously loaded extension C:\Users\Jazz\Documents\ASL\vasl\extensions\FB.mdx