The derby.properties is not currently being installed -- defaults
seem to work fine...

--- library/derby.properties	2010-08-06 17:18:38.000000000 -0400
+++ library/derby.properties	2011-01-03 01:53:46.000000000 -0500
@@ -1,3 +1,2 @@
-derby.stream.error.file=../log/derby.log
 derby.storage.pageSize=8192
 derby.storage.pageCacheSize=3000