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java.lang.NullPointerException at sun.plugin.cache.CacheFile.getFileType(CacheFile.java:81) at sun.plugin.cache.CacheFile.before(CacheFile.java:127) at sun.plugin.cache.CleanupThread$1.compare(CleanupThread.java:204) at java.util.Arrays.mergeSort(Arrays.java:1237) at java.util.Arrays.mergeSort(Arrays.java:1244) at java.util.Arrays.mergeSort(Arrays.java:1245) at java.util.Arrays.mergeSort(Arrays.java:1244) at java.util.Arrays.mergeSort(Arrays.java:1245) at java.util.Arrays.mergeSort(Arrays.java:1244) at java.util.Arrays.mergeSort(Arrays.java:1244) at java.util.Arrays.sort(Arrays.java:1185) at sun.plugin.cache.CleanupThread.getFilesInCache(CleanupThread.java:200) at sun.plugin.cache.CleanupThread.cleanCache(CleanupThread.java:122) at sun.plugin.cache.CleanupThread.run(CleanupThread.java:93)