CustomEditor and Throwable

Hi I working on custom editor. I registered my filetype and provider in plugin.xml and it works in case of open file from filesystem but when I tried open file with follow commands:

LightVirtualFile lightVirtualFile = new LightVirtualFile("xxx.jsono", JsonFileType.INSTANCE, content);

FileEditorManager.getInstance(project).openFile(lightVirtualFile, true);

File is open in my custom editor but I also receive always this exception:

[  19593]  ERROR - tor.impl.FileEditorManagerImpl - Assertion failed
java.lang.Throwable
 at com.intellij.openapi.diagnostic.Logger.assertTrue(Logger.java:144)
 at com.intellij.openapi.diagnostic.Logger.assertTrue(Logger.java:153)
 at com.intellij.openapi.fileEditor.impl.FileEditorManagerImpl$12.run(FileEditorManagerImpl.java:860)
 at com.intellij.util.ui.UIUtil.invokeAndWaitIfNeeded(UIUtil.java:2363)
 at com.intellij.openapi.fileEditor.impl.FileEditorManagerImpl.openFileImpl4(FileEditorManagerImpl.java:842)
 at com.intellij.openapi.fileEditor.impl.FileEditorManagerImpl.openFileImpl3(FileEditorManagerImpl.java:776)
 at com.intellij.openapi.fileEditor.impl.FileEditorManagerImpl$9.run(FileEditorManagerImpl.java:756)
 at com.intellij.openapi.command.impl.CoreCommandProcessor.executeCommand(CoreCommandProcessor.java:124)
 at com.intellij.openapi.command.impl.CoreCommandProcessor.executeCommand(CoreCommandProcessor.java:99)
 at com.intellij.openapi.command.impl.CoreCommandProcessor.executeCommand(CoreCommandProcessor.java:85)
 at com.intellij.openapi.fileEditor.impl.FileEditorManagerImpl.openFileImpl2(FileEditorManagerImpl.java:753)
 at com.intellij.openapi.fileEditor.impl.FileEditorManagerImpl.openFileWithProviders(FileEditorManagerImpl.java:694)
 at com.intellij.openapi.fileEditor.ex.FileEditorManagerEx.openFile(FileEditorManagerEx.java:140)
 at com.slama.plugin.json.dialogs.OpenJSONUrlDialog$2$1$1.run(OpenJSONUrlDialog.java:168)
 at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
 at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:749)
 at java.awt.EventQueue.access$500(EventQueue.java:97)
 at java.awt.EventQueue$3.run(EventQueue.java:702)
 at java.awt.EventQueue$3.run(EventQueue.java:696)
 at java.security.AccessController.doPrivileged(Native Method)
 at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)
 at java.awt.EventQueue.dispatchEvent(EventQueue.java:719)
 at com.intellij.ide.IdeEventQueue.e(IdeEventQueue.java:734)
 at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:569)
 at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:382)
 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)
[  19595]  ERROR - tor.impl.FileEditorManagerImpl - IntelliJ IDEA 14.1.3  Build #IU-141.1010.3
[  19595]  ERROR - tor.impl.FileEditorManagerImpl - JDK: 1.8.0_31
[  19595]  ERROR - tor.impl.FileEditorManagerImpl - VM: Java HotSpot(TM) 64-Bit Server VM
[  19595]  ERROR - tor.impl.FileEditorManagerImpl - Vendor: Oracle Corporation
[  19595]  ERROR - tor.impl.FileEditorManagerImpl - OS: Mac OS X
[  19595]  ERROR - tor.impl.FileEditorManagerImpl - Last Action: openwrapper
[  19595]  ERROR - tor.impl.FileEditorManagerImpl - Current Command: