IntelliJ 2016.1.1 Won't Stop Scanning Files To Index

I'm running IntelliJ 2016.1.1 on Windows 7 enterprise 64 bit SP1.  

IntelliJ started cycling a task repeatedly "Scanning files to index", making it impossible to continue working.  

If I shut down IntelliJ and start it again the behavior starts again.

I've zipped my /log folder, but I don't see how to upload it here.

Here's the start of my log file:

2016-12-22 09:27:21,117 [232130967] ERROR - plication.impl.ApplicationImpl - java.io.IOException: writePrevChunkAddress:22603,23064,C:\Users\mduffy\.IntelliJIdea2016.1\system\index\html5.custom.attributes.index\html5.custom.attributes.index.storage.values
java.lang.RuntimeException: java.io.IOException: writePrevChunkAddress:22603,23064,C:\Users\mduffy\.IntelliJIdea2016.1\system\index\html5.custom.attributes.index\html5.custom.attributes.index.storage.values
at com.intellij.util.io.PersistentHashMap$5.onDropFromCache(PersistentHashMap.java:251)
at com.intellij.util.io.PersistentHashMap$5.onDropFromCache(PersistentHashMap.java:215)
at com.intellij.util.containers.SLRUMap.clear(SLRUMap.java:146)
at com.intellij.util.io.PersistentHashMap.doClose(PersistentHashMap.java:642)
at com.intellij.util.io.PersistentHashMap.close(PersistentHashMap.java:633)
at com.intellij.util.indexing.MapIndexStorage.clear(MapIndexStorage.java:199)
at com.intellij.util.indexing.MemoryIndexStorage.clear(MemoryIndexStorage.java:96)
at com.intellij.util.indexing.MapReduceIndex.clear(MapReduceIndex.java:128)
at com.intellij.util.indexing.FileBasedIndexImpl.d(FileBasedIndexImpl.java:1331)
at com.intellij.util.indexing.FileBasedIndexImpl.access$3400(FileBasedIndexImpl.java:100)
at com.intellij.util.indexing.FileBasedIndexImpl$21$1.run(FileBasedIndexImpl.java:1605)
at com.intellij.openapi.progress.impl.CoreProgressManager$TaskRunnable.run(CoreProgressManager.java:563)
at com.intellij.openapi.progress.impl.CoreProgressManager$8.run(CoreProgressManager.java:357)
at com.intellij.openapi.progress.impl.CoreProgressManager$2.run(CoreProgressManager.java:142)
at com.intellij.openapi.progress.impl.CoreProgressManager.a(CoreProgressManager.java:446)
at com.intellij.openapi.progress.impl.CoreProgressManager.executeProcessUnderProgress(CoreProgressManager.java:392)
at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:54)
at com.intellij.openapi.progress.impl.CoreProgressManager.runProcess(CoreProgressManager.java:127)
at com.intellij.openapi.application.impl.ApplicationImpl$13$1.run(ApplicationImpl.java:633)
at com.intellij.openapi.application.impl.ApplicationImpl$8.run(ApplicationImpl.java:369)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.io.IOException: writePrevChunkAddress:22603,23064,C:\Users\mduffy\.IntelliJIdea2016.1\system\index\html5.custom.attributes.index\html5.custom.attributes.index.storage.values
at com.intellij.util.io.PersistentHashMapValueStorage.writePrevChunkAddress(PersistentHashMapValueStorage.java:462)
at com.intellij.util.io.PersistentHashMapValueStorage.saveData(PersistentHashMapValueStorage.java:176)
at com.intellij.util.io.PersistentHashMapValueStorage.appendBytes(PersistentHashMapValueStorage.java:151)
at com.intellij.util.io.PersistentHashMap$5.onDropFromCache(PersistentHashMap.java:236)
... 24 more
2016-12-22 09:27:21,117 [232130967] INFO - il.indexing.FileBasedIndexImpl - scheduleIndexRebuild, reason: checkRebuild
2016-12-22 09:27:21,118 [232130968] ERROR - plication.impl.ApplicationImpl - IntelliJ IDEA 2016.1.1 Build #IU-145.597.3
2016-12-22 09:27:21,118 [232130968] ERROR - plication.impl.ApplicationImpl - JDK: 1.8.0_77
2016-12-22 09:27:21,118 [232130968] ERROR - plication.impl.ApplicationImpl - VM: Java HotSpot(TM) 64-Bit Server VM
2016-12-22 09:27:21,118 [232130968] ERROR - plication.impl.ApplicationImpl - Vendor: Oracle Corporation
2016-12-22 09:27:21,118 [232130968] ERROR - plication.impl.ApplicationImpl - OS: Windows 7
2016-12-22 09:27:21,118 [232130968] ERROR - plication.impl.ApplicationImpl - Last Action: About
2016-12-22 09:27:21,175 [232131025] INFO - .diagnostic.PerformanceWatcher - Pushing properties took 7ms; general responsiveness: ok; EDT responsiveness: ok
2016-12-22 09:27:21,513 [232131363] INFO - .diagnostic.PerformanceWatcher - Indexable file iteration took 338ms; general responsiveness: ok; EDT responsiveness: ok
2016-12-22 09:27:21,513 [232131363] INFO - indexing.UnindexedFilesUpdater - Unindexed files update started: 21 files to update
2016-12-22 09:27:21,575 [232131425] INFO - .diagnostic.PerformanceWatcher - Unindexed files update took 62ms; general responsiveness: ok; EDT responsiveness: ok
2016-12-22 09:27:21,953 [232131803] INFO - il.indexing.FileBasedIndexImpl - Rebuild requested for index html5.custom.attributes.index
java.lang.Throwable: com.intellij.util.indexing.StorageException: java.io.IOException: writePrevChunkAddress:22603,23064,C:\Users\mduffy\.IntelliJIdea2016.1\system\index\html5.custom.attributes.index\html5.custom.attributes.index.storage.values
at com.intellij.util.indexing.FileBasedIndexImpl.scheduleRebuild(FileBasedIndexImpl.java:1313)
at com.intellij.util.indexing.FileBasedIndexImpl.processAllKeys(FileBasedIndexImpl.java:801)
at com.intellij.util.indexing.FileBasedIndexImpl.processAllKeys(FileBasedIndexImpl.java:787)
at com.intellij.util.indexing.FileBasedIndexImpl.getAllKeys(FileBasedIndexImpl.java:781)
at com.intellij.html.impl.Html5CustomAttributeDescriptorsProvider$1.compute(Html5CustomAttributeDescriptorsProvider.java:58)
at com.intellij.psi.impl.PsiCachedValueImpl.doCompute(PsiCachedValueImpl.java:49)
at com.intellij.util.CachedValueBase.getValueWithLock(CachedValueBase.java:222)
at com.intellij.psi.impl.PsiCachedValue.getValueWithLock(PsiCachedValue.java:66)
at com.intellij.psi.impl.PsiCachedValueImpl.getValue(PsiCachedValueImpl.java:38)
at com.intellij.util.CachedValuesManagerImpl.getCachedValue(CachedValuesManagerImpl.java:84)
at com.intellij.psi.util.CachedValuesManager.getCachedValue(CachedValuesManager.java:119)
at com.intellij.html.impl.Html5CustomAttributeDescriptorsProvider.getAttributeDescriptors(Html5CustomAttributeDescriptorsProvider.java:54)
at com.intellij.html.impl.RelaxedHtmlFromSchemaElementDescriptor.addAttrDescriptorsForFacelets(RelaxedHtmlFromSchemaElementDescriptor.java:83)
at com.intellij.psi.impl.source.html.dtd.HtmlElementDescriptorImpl.getAttributesDescriptors(HtmlElementDescriptorImpl.java:204)
at com.intellij.codeInsight.daemon.impl.analysis.XmlHighlightVisitor.a(XmlHighlightVisitor.java:307)
at com.intellij.codeInsight.daemon.impl.analysis.XmlHighlightVisitor.a(XmlHighlightVisitor.java:297)
at com.intellij.codeInsight.daemon.impl.analysis.XmlHighlightVisitor.c(XmlHighlightVisitor.java:167)
at com.intellij.codeInsight.daemon.impl.analysis.XmlHighlightVisitor.visitXmlToken(XmlHighlightVisitor.java:131)
at com.intellij.psi.impl.source.xml.XmlTokenImpl.accept(XmlTokenImpl.java:46)
at com.intellij.codeInsight.daemon.impl.analysis.XmlHighlightVisitor.visit(XmlHighlightVisitor.java:740)
at com.intellij.codeInsight.daemon.impl.GeneralHighlightingPass.a(GeneralHighlightingPass.java:351)
at com.intellij.codeInsight.daemon.impl.GeneralHighlightingPass.access$100(GeneralHighlightingPass.java:62)
at com.intellij.codeInsight.daemon.impl.GeneralHighlightingPass$3.run(GeneralHighlightingPass.java:280)
at com.intellij.codeInsight.daemon.impl.GeneralHighlightingPass.a(GeneralHighlightingPass.java:305)
at com.intellij.codeInsight.daemon.impl.GeneralHighlightingPass.access$200(GeneralHighlightingPass.java:62)
at com.intellij.codeInsight.daemon.impl.GeneralHighlightingPass$4.run(GeneralHighlightingPass.java:311)
at com.intellij.codeInsight.daemon.impl.analysis.XmlHighlightVisitor.analyze(XmlHighlightVisitor.java:750)
at com.intellij.codeInsight.daemon.impl.GeneralHighlightingPass.a(GeneralHighlightingPass.java:308)
at com.intellij.codeInsight.daemon.impl.GeneralHighlightingPass.access$200(GeneralHighlightingPass.java:62)
at com.intellij.codeInsight.daemon.impl.GeneralHighlightingPass$4.run(GeneralHighlightingPass.java:311)
at com.intellij.codeInsight.daemon.impl.DefaultHighlightVisitor.analyze(DefaultHighlightVisitor.java:83)
at com.intellij.codeInsight.daemon.impl.GeneralHighlightingPass.a(GeneralHighlightingPass.java:308)
at com.intellij.codeInsight.daemon.impl.GeneralHighlightingPass.a(GeneralHighlightingPass.java:277)
at com.intellij.codeInsight.daemon.impl.GeneralHighlightingPass.collectInformationWithProgress(GeneralHighlightingPass.java:216)
at com.intellij.codeInsight.daemon.impl.ProgressableTextEditorHighlightingPass.doCollectInformation(ProgressableTextEditorHighlightingPass.java:82)
at com.intellij.codeHighlighting.TextEditorHighlightingPass.collectInformation(TextEditorHighlightingPass.java:70)
at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass$1$1.run(PassExecutorService.java:444)
at com.intellij.openapi.application.impl.ApplicationImpl.tryRunReadAction(ApplicationImpl.java:1178)
at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass$1.run(PassExecutorService.java:435)
at com.intellij.openapi.progress.impl.CoreProgressManager.a(CoreProgressManager.java:446)
at com.intellij.openapi.progress.impl.CoreProgressManager.executeProcessUnderProgress(CoreProgressManager.java:392)
at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:54)
at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass.a(PassExecutorService.java:432)
at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass.run(PassExecutorService.java:408)
at com.intellij.concurrency.JobLauncherImpl$VoidForkJoinTask$1.exec(JobLauncherImpl.java:206)
at jsr166e.ForkJoinTask.doExec(ForkJoinTask.java:260)
at jsr166e.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:858)
at jsr166e.ForkJoinPool.scan(ForkJoinPool.java:1687)
at jsr166e.ForkJoinPool.runWorker(ForkJoinPool.java:1642)
at jsr166e.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:108)
Caused by: com.intellij.util.indexing.StorageException: java.io.IOException: writePrevChunkAddress:22603,23064,C:\Users\mduffy\.IntelliJIdea2016.1\system\index\html5.custom.attributes.index\html5.custom.attributes.index.storage.values
at com.intellij.util.indexing.MapIndexStorage.processKeys(MapIndexStorage.java:289)
at com.intellij.util.indexing.MemoryIndexStorage.processKeys(MemoryIndexStorage.java:135)
at com.intellij.util.indexing.MapReduceIndex.processAllKeys(MapReduceIndex.java:296)
at com.intellij.util.indexing.FileBasedIndexImpl.processAllKeys(FileBasedIndexImpl.java:798)
... 48 more
Caused by: java.io.IOException: writePrevChunkAddress:22603,23064,C:\Users\mduffy\.IntelliJIdea2016.1\system\index\html5.custom.attributes.index\html5.custom.attributes.index.storage.values
at com.intellij.util.io.PersistentHashMapValueStorage.writePrevChunkAddress(PersistentHashMapValueStorage.java:462)
at com.intellij.util.io.PersistentHashMapValueStorage.saveData(PersistentHashMapValueStorage.java:176)
at com.intellij.util.io.PersistentHashMapValueStorage.appendBytes(PersistentHashMapValueStorage.java:151)
at com.intellij.util.io.PersistentHashMap$5.onDropFromCache(PersistentHashMap.java:236)
at com.intellij.util.io.PersistentHashMap$5.onDropFromCache(PersistentHashMap.java:215)
at com.intellij.util.containers.SLRUMap.clear(SLRUMap.java:146)
at com.intellij.util.io.PersistentHashMap.processKeys(PersistentHashMap.java:435)
at com.intellij.util.indexing.MapIndexStorage.processKeys(MapIndexStorage.java:281)
... 51 more