[Purple Haze Test] NullPointerException: Cannot invoke "VASSAL.build.module.properties.MutablePropertiesContainer.addMutableProperty(String, VASSAL.build.module.properties.MutableProperty)" because "this.parent" is null

[uckelman]

ABR
Version	3.7.15
Reporter	[email protected]
Error Log	5920 bytes

trying to copy a folder and contents

Purple Haze Test v0.005 3.7.15

java.lang.NullPointerException: Cannot invoke "VASSAL.build.module.properties.MutablePropertiesContainer.addMutableProperty(String, VASSAL.build.module.properties.MutableProperty)" because "this.parent" is null
 at VASSAL.build.module.properties.MutableProperty$Impl.addTo(MutableProperty.java:99)
 at VASSAL.build.module.DiceButton.addTo(DiceButton.java:504)
 at VASSAL.build.Builder.build(Builder.java:82)
 at VASSAL.build.AbstractBuildable.build(AbstractBuildable.java:104)