Idea 13 hotswap crashes

When I try to do hot swap, I've got an NPE.
Here is log:

2014-02-12 16:00:05,730 [ 122428]   INFO - ij.compiler.impl.CompileDriver - java.io.EOFException
        at java.io.DataInputStream.readFully(DataInputStream.java:197)
        at com.intellij.util.io.IOUtil.readUTFFast(IOUtil.java:131)
        at org.jetbrains.jps.incremental.storage.OneToManyPathsMapping$PathCollectionExternalizer.read(OneToManyPathsMapping.java:96)
        at org.jetbrains.jps.incremental.storage.OneToManyPathsMapping$PathCollectionExternalizer.read(OneToManyPathsMapping.java:84)
        at com.intellij.util.io.PersistentHashMap.doGet(PersistentHashMap.java:427)
        at com.intellij.util.io.PersistentHashMap.get(PersistentHashMap.java:398)
        at org.jetbrains.jps.incremental.storage.AbstractStateStorage.getState(AbstractStateStorage.java:118)
        at org.jetbrains.jps.incremental.storage.OneToManyPathsMapping.getState(OneToManyPathsMapping.java:61)
        at org.jetbrains.jps.incremental.storage.SourceToOutputMappingImpl.getOutputs(SourceToOutputMappingImpl.java:72)
        at org.jetbrains.jps.incremental.IncProjectBuilder.clearOutputFiles(IncProjectBuilder.java:437)
        at org.jetbrains.jps.incremental.BuildOperations.ensureFSStateInitialized(BuildOperations.java:59)
        at org.jetbrains.jps.incremental.IncProjectBuilder.buildTargetsChunk(IncProjectBuilder.java:842)
        at org.jetbrains.jps.incremental.IncProjectBuilder.buildChunkIfAffected(IncProjectBuilder.java:764)
        at org.jetbrains.jps.incremental.IncProjectBuilder.buildChunks(IncProjectBuilder.java:587)
        at org.jetbrains.jps.incremental.IncProjectBuilder.runBuild(IncProjectBuilder.java:344)
        at org.jetbrains.jps.incremental.IncProjectBuilder.build(IncProjectBuilder.java:184)
        at org.jetbrains.jps.cmdline.BuildRunner.runBuild(BuildRunner.java:129)
        at org.jetbrains.jps.cmdline.BuildSession.runBuild(BuildSession.java:224)
        at org.jetbrains.jps.cmdline.BuildSession.run(BuildSession.java:113)
        at org.jetbrains.jps.cmdline.BuildMain$MyMessageHandler$1.run(BuildMain.java:133)
        at org.jetbrains.jps.service.impl.SharedThreadPoolImpl$1.run(SharedThreadPoolImpl.java:41)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
        at java.util.concurrent.FutureTask.run(FutureTask.java:262)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        at java.lang.Thread.run(Thread.java:744)

2014-02-12 16:00:05,733 [ 122431]   INFO - s.impl.stores.FileBasedStorage - Document was not loaded for $PROJECT_CONFIG_DIR$/validation.xml file is null


I try to find any reference on file validation.xml but it's empty. Where can this reference be?

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