Sigtest fails processing some classes:

/opt/java/j7/bin/java -jar sigtestdev.jar setup -filename allrt.sig -classpath /opt/java/j7/jre/lib/rt.jar -keepfile 2>&1 | grep -i fatal

Fatal error: class com.sun.xml.internal.stream.buffer.FragmentedArray<java.lang.String not found
Fatal error: class com.sun.xml.internal.stream.buffer.FragmentedArray<char not found