Java exception in clooj 0.4.4 on Windows 8

D:\src\Clojure>java -jar d:\downloads\programming\clojure\clooj\clooj-0.4.4-stan
dalone.jar
java.util.regex.PatternSyntaxException: Unexpected internal error near index 1

^
at java.util.regex.Pattern.error(Unknown Source)
at java.util.regex.Pattern.compile(Unknown Source)
at java.util.regex.Pattern.(Unknown Source)
at java.util.regex.Pattern.compile(Unknown Source)
at java.lang.String.split(Unknown Source)
at java.lang.String.split(Unknown Source)
at clooj.project$path_components.invoke(project.clj:69)
at clooj.project$file_ancestor_QMARK_.invoke(project.clj:78)
at clooj.project$path_to_node$fn__1271.invoke(project.clj:97)
at clojure.core$filter$fn__4234.invoke(core.clj:2529)
at clojure.lang.LazySeq.sval(LazySeq.java:42)
at clojure.lang.LazySeq.seq(LazySeq.java:60)
at clojure.lang.LazySeq.first(LazySeq.java:82)
at clojure.lang.RT.first(RT.java:577)
at clojure.core$first.invoke(core.clj:55)
at clooj.project$path_to_node.invoke(project.clj:96)
at clooj.project$set_tree_selection$fn__1292.invoke(project.clj:115)
at clojure.lang.AFn.run(AFn.java:24)
at java.awt.event.InvocationEvent.dispatch(Unknown Source)
at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$200(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Sour
ce)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)