IDE Error with TMC tasks (files.len still doesn't exist)

[LofhJann]

I'm getting IDE error with every assignment of mooc ohjelmointi 2017.

Parent file still doesn't exist:C:\Users\x___x.IdeaIC2016.3\system\frameworks\detection\C:\Users\x__x\Documents\NetBeansProjects\mooc-2017-ohjelmointi\TMCProjects\mooc-2017-ohjelmointi\osa03-Osa03_16.Kertoja.17b632ca\files.len
java.io.IOException: Parent file still doesn't exist:C:\Users\x___x.IdeaIC2016.3\system\frameworks\detection\C:\Users\x___x\Documents\NetBeansProjects\mooc-2017-ohjelmointi\TMCProjects\mooc-2017-ohjelmointi\osa03-Osa03_16.Kertoja.17b632ca\files.len
at com.intellij.util.io.ResizeableMappedFile$1.execute(ResizeableMappedFile.java:138)
at com.intellij.util.io.ResizeableMappedFile$1.execute(ResizeableMappedFile.java:130)
at com.intellij.openapi.util.io.FileUtilRt.doIOOperation(FileUtilRt.java:734)
at com.intellij.util.io.ResizeableMappedFile.writeLength(ResizeableMappedFile.java:130)
at com.intellij.util.io.ResizeableMappedFile.(ResizeableMappedFile.java:52)
at com.intellij.util.io.PersistentBTreeEnumerator.(PersistentBTreeEnumerator.java:81)
at com.intellij.util.io.PersistentEnumeratorDelegate.(PersistentEnumeratorDelegate.java:47)
at com.intellij.util.io.PersistentHashMap.(PersistentHashMap.java:136)
at com.intellij.util.io.PersistentHashMap.(PersistentHashMap.java:132)
at com.intellij.util.io.PersistentHashMap.(PersistentHashMap.java:128)
at com.intellij.framework.detection.impl.DetectedFrameworksData.(DetectedFrameworksData.java:53)
at com.intellij.framework.detection.impl.FrameworkDetectionManager.doInitialize(FrameworkDetectionManager.java:96)
at com.intellij.framework.detection.impl.FrameworkDetectionManager.initComponent(FrameworkDetectionManager.java:86)
at com.intellij.openapi.components.impl.ComponentManagerImpl$ComponentConfigComponentAdapter.getComponentInstance(ComponentManagerImpl.java:501)
at com.intellij.openapi.components.impl.ComponentManagerImpl.createComponents(ComponentManagerImpl.java:125)
at com.intellij.openapi.components.impl.ComponentManagerImpl.init(ComponentManagerImpl.java:109)
at com.intellij.openapi.components.impl.ComponentManagerImpl.init(ComponentManagerImpl.java:96)
at com.intellij.openapi.project.impl.ProjectImpl.init(ProjectImpl.java:287)
at com.intellij.openapi.project.impl.ProjectManagerImpl.initProject(ProjectManagerImpl.java:222)
at com.intellij.openapi.project.impl.ProjectManagerImpl.newProject(ProjectManagerImpl.java:178)
at fi.helsinki.cs.tmc.intellij.importexercise.NewProjectUtilModified.importExercise(NewProjectUtilModified.java:63)
at fi.helsinki.cs.tmc.intellij.importexercise.ExerciseImport.importExercise(ExerciseImport.java:23)
at fi.helsinki.cs.tmc.intellij.io.ProjectOpener.openProject(ProjectOpener.java:42)
at fi.helsinki.cs.tmc.intellij.services.exercises.NextExerciseFetcher$1.run(NextExerciseFetcher.java:44)
at com.intellij.openapi.application.TransactionGuardImpl$6.run(TransactionGuardImpl.java:318)
at com.intellij.openapi.application.impl.LaterInvocator$FlushQueue.runNextEvent(LaterInvocator.java:417)
at com.intellij.openapi.application.impl.LaterInvocator$FlushQueue.run(LaterInvocator.java:401)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:756)
at java.awt.EventQueue.access$500(EventQueue.java:97)
at java.awt.EventQueue$3.run(EventQueue.java:709)
at java.awt.EventQueue$3.run(EventQueue.java:703)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:726)
at com.intellij.ide.IdeEventQueue.defaultDispatchEvent(IdeEventQueue.java:843)
at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:679)
at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:391)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)