Index: trunk/test/unit/org/openstreetmap/josm/JOSMFixture.java
===================================================================
--- trunk/test/unit/org/openstreetmap/josm/JOSMFixture.java	(revision 12851)
+++ trunk/test/unit/org/openstreetmap/josm/JOSMFixture.java	(revision 12855)
@@ -98,4 +98,5 @@
         TimeZone.setDefault(TimeZone.getTimeZone("UTC"));
         Config.setPreferencesInstance(Main.pref);
+        Config.setBaseDirectoriesProvider(Main.pref);
         Main.pref.resetToInitialState();
         Main.pref.enableSaveOnPut(false);
Index: trunk/test/unit/org/openstreetmap/josm/testutils/JOSMTestRules.java
===================================================================
--- trunk/test/unit/org/openstreetmap/josm/testutils/JOSMTestRules.java	(revision 12851)
+++ trunk/test/unit/org/openstreetmap/josm/testutils/JOSMTestRules.java	(revision 12855)
@@ -278,4 +278,5 @@
 
         Config.setPreferencesInstance(Main.pref);
+        Config.setBaseDirectoriesProvider(Main.pref);
         // All tests use the same timezone.
         TimeZone.setDefault(DateUtils.UTC);