(fs) java/nio/file/WatchService/SensitivityModifier.java failing intermittently (win8)

TESTFAIL:java/nio/file/WatchService/SensitivityModifier.java

Test java/nio/file/WatchService/SensitivityModifier.java fails on windows8 platforms.

see details:
#section:main
----------messages:(3/140)----------
command: main SensitivityModifier
reason: User specified action: run main/timeout=240 SensitivityModifier
elapsed time (seconds): 9.645
----------System.out:(20/832)*----------
Modify: C:\\Users\\aurora\\AppData\\Local\\Temp\\name7091287189313063692\\dir7\\file32
Waiting for event...
Event OK
Modify: C:\\Users\\aurora\\AppData\\Local\\Temp\\name7091287189313063692\\dir5\\file2
Waiting for event...
Event OK
Modify: C:\\Users\\aurora\\AppData\\Local\\Temp\\name7091287189313063692\\dir14\\file5
Waiting for event...
Event OK
Modify: C:\\Users\\aurora\\AppData\\Local\\Temp\\name7091287189313063692\\dir17\\file35
Waiting for event...
Event OK
Modify: C:\\Users\\aurora\\AppData\\Local\\Temp\\name7091287189313063692\\dir9\\file16
Waiting for event...
Event OK
Modify: C:\\Users\\aurora\\AppData\\Local\\Temp\\name7091287189313063692\\dir22\\file36
Waiting for event...
Event OK
Modify: C:\\Users\\aurora\\AppData\\Local\\Temp\\name7091287189313063692\\dir14\\file30
Waiting for event...
----------System.err:(13/704)----------
java.lang.RuntimeException: Unexpected context: file
at SensitivityModifier.doTest(SensitivityModifier.java:94)
at SensitivityModifier.main(SensitivityModifier.java:116)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:491)
at com.sun.javatest.regtest.MainAction$SameVMRunnable.run(MainAction.java:728)
at java.lang.Thread.run(Thread.java:724)

JavaTest Message: Test threw exception: java.lang.RuntimeException
JavaTest Message: shutting down test

result: Failed. Execution failed: `main' threw exception: java.lang.RuntimeException: Unexpected context: file16


test result: Failed. Execution failed: `main' threw exception: java.lang.RuntimeException: Unexpected context: file16