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Exception while opening project (v2.0.1)

See original GitHub issue

While opening a project on Android Studio with the plugin version 2.0.1, I have this exception:

java.lang.NoClassDefFoundError: com/intellij/util/indexing/IndexId
	at mobi.hsz.idea.gitignore.IgnoreManager.isFileIgnored(IgnoreManager.java:252)
	at mobi.hsz.idea.gitignore.IgnoreManager.isFileIgnoredAndTracked(IgnoreManager.java:317)
	at mobi.hsz.idea.gitignore.projectView.IgnoreViewNodeDecorator.decorate(IgnoreViewNodeDecorator.java:89)
	at com.intellij.ide.projectView.impl.nodes.AbstractPsiBasedNode.lambda$update$0(AbstractPsiBasedNode.java:167)
	at com.intellij.openapi.application.impl.ApplicationImpl.runReadAction(ApplicationImpl.java:843)
	at com.intellij.ide.projectView.impl.nodes.AbstractPsiBasedNode.update(AbstractPsiBasedNode.java:138)
	at com.android.tools.idea.navigator.nodes.AndroidBuildScriptNode.update(AndroidBuildScriptNode.java:44)
	at com.intellij.ide.util.treeView.PresentableNodeDescriptor.getUpdatedPresentation(PresentableNodeDescriptor.java:88)
	at com.intellij.ide.util.treeView.PresentableNodeDescriptor.update(PresentableNodeDescriptor.java:41)
	at com.intellij.ide.util.treeView.AbstractTreeBuilder.updateNodeDescriptor(AbstractTreeBuilder.java:569)
	at com.intellij.ide.util.treeView.AbstractTreeUi$22.perform(AbstractTreeUi.java:934)
	at com.intellij.ide.util.treeView.TreeRunnable.run(TreeRunnable.java:36)
	at com.intellij.ide.util.treeView.AbstractTreeUi.execute(AbstractTreeUi.java:1832)
	at com.intellij.ide.util.treeView.AbstractTreeUi.update(AbstractTreeUi.java:930)
	at com.intellij.ide.util.treeView.AbstractTreeUi.update(AbstractTreeUi.java:885)
	at com.intellij.ide.util.treeView.AbstractTreeUi.processExistingNode(AbstractTreeUi.java:3005)
	at com.intellij.ide.util.treeView.AbstractTreeUi.access$4800(AbstractTreeUi.java:66)
	at com.intellij.ide.util.treeView.AbstractTreeUi$32$1.run(AbstractTreeUi.java:1716)
	at com.intellij.ide.util.treeView.AbstractTreeUi.execute(AbstractTreeUi.java:1811)
	at com.intellij.ide.util.treeView.AbstractTreeUi.access$5100(AbstractTreeUi.java:66)
	at com.intellij.ide.util.treeView.AbstractTreeUi$33.perform(AbstractTreeUi.java:1777)
	at com.intellij.ide.util.treeView.TreeRunnable.run(TreeRunnable.java:36)
	at com.intellij.ide.util.treeView.AbstractTreeUi.executeYieldingRequest(AbstractTreeUi.java:2081)
	at com.intellij.ide.util.treeView.AbstractTreeUi.access$5700(AbstractTreeUi.java:66)
	at com.intellij.ide.util.treeView.AbstractTreeUi$36$1.perform(AbstractTreeUi.java:1978)
	at com.intellij.ide.util.treeView.TreeRunnable.run(TreeRunnable.java:36)
	at com.intellij.ide.util.treeView.AbstractTreeBuilder.runOnYeildingDone(AbstractTreeBuilder.java:425)
	at com.intellij.ide.util.treeView.AbstractTreeUi.runOnYieldingDone(AbstractTreeUi.java:2176)
	at com.intellij.ide.util.treeView.AbstractTreeUi$36.perform(AbstractTreeUi.java:1973)
	at com.intellij.ide.util.treeView.TreeRunnable.run(TreeRunnable.java:36)
	at com.intellij.ide.util.treeView.AbstractTreeBuilder.lambda$new$0(AbstractTreeBuilder.java:51)
	at com.intellij.util.containers.TransferToEDTQueue.processNext(TransferToEDTQueue.java:99)
	at com.intellij.util.containers.TransferToEDTQueue.access$300(TransferToEDTQueue.java:37)
	at com.intellij.util.containers.TransferToEDTQueue$1.run(TransferToEDTQueue.java:58)
	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:80)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:726)
	at com.intellij.ide.IdeEventQueue.defaultDispatchEvent(IdeEventQueue.java:795)
	at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:631)
	at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:387)
	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)
Caused by: java.lang.ClassNotFoundException: com.intellij.util.indexing.IndexId PluginClassLoader[mobi.hsz.idea.gitignore, 2.0.1]
	at com.intellij.ide.plugins.cl.PluginClassLoader.loadClass(PluginClassLoader.java:64)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
	... 51 more```