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java.lang.NullPointerException at sun.plugin.cache.CacheFile.getFileType(Unknown Source) at sun.plugin.cache.CacheFile.before(Unknown Source) at sun.plugin.cache.CleanupThread$1.compare(Unknown Source) at java.util.Arrays.mergeSort(Unknown Source) at java.util.Arrays.mergeSort(Unknown Source) at java.util.Arrays.mergeSort(Unknown Source) at java.util.Arrays.mergeSort(Unknown Source) at java.util.Arrays.mergeSort(Unknown Source) at java.util.Arrays.mergeSort(Unknown Source) at java.util.Arrays.mergeSort(Unknown Source) at java.util.Arrays.mergeSort(Unknown Source) at java.util.Arrays.mergeSort(Unknown Source) at java.util.Arrays.mergeSort(Unknown Source) at java.util.Arrays.sort(Unknown Source) at sun.plugin.cache.CleanupThread.getFilesInCache(Unknown Source) at sun.plugin.cache.CleanupThread.cleanCache(Unknown Source) at sun.plugin.cache.CleanupThread.run(Unknown Source)