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java.lang.AssertionError: Unknown symbol type org.intellij.plugins.ceylon.ide.ceylonCode.model.CeylonModelManager kind: 63	at com.redhat.ceylon.langtools.tools.javac.comp.Check.checkFlags(Check.java:1134)	at com.redhat.ceylon.langtools.tools.javac.comp.Enter.visitClassDef(Enter.java:402)	at com.redhat.ceylon.langtools.tools.javac.tree.JCTree$JCClassDecl.accept(JCTree.java:692)	at com.redhat.ceylon.langtools.tools.javac.comp.Enter.classEnter(Enter.java:263)	at com.redhat.ceylon.compiler.java.loader.CeylonEnter.classEnter(CeylonEnter.java:325)	at com.redhat.ceylon.langtools.tools.javac.comp.Enter.classEnter(Enter.java:277)	at com.redhat.ceylon.langtools.tools.javac.comp.Enter.visitTopLevel(Enter.java:336)	at com.redhat.ceylon.langtools.tools.javac.tree.JCTree$JCCompilationUnit.accept(JCTree.java:515)	at com.redhat.ceylon.langtools.tools.javac.comp.Enter.classEnter(Enter.java:263)	at com.redhat.ceylon.compiler.java.loader.CeylonEnter.classEnter(CeylonEnter.java:320)	at com.redhat.ceylon.langtools.tools.javac.comp.Enter.classEnter(Enter.java:277)	at com.redhat.ceylon.langtools.tools.javac.comp.Enter.complete(Enter.java:542)	at com.redhat.ceylon.langtools.tools.javac.comp.Enter.main(Enter.java:527)	at com.redhat.ceylon.compiler.java.loader.CeylonEnter.main(CeylonEnter.java:233)	at com.redhat.ceylon.langtools.tools.javac.main.JavaCompiler.enterTrees(JavaCompiler.java:985)	at com.redhat.ceylon.langtools.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:859)	at com.redhat.ceylon.compiler.java.tools.LanguageCompiler.compile(LanguageCompiler.java:265)	at com.redhat.ceylon.compiler.java.launcher.Main.compile(Main.java:651)	at com.redhat.ceylon.compiler.java.launcher.Main.compile(Main.java:563)	at com.redhat.ceylon.compiler.java.launcher.Main.compile(Main.java:555)	at com.redhat.ceylon.compiler.java.launcher.Main.compile(Main.java:544)	at com.redhat.ceylon.compiler.CeylonCompileTool.run(CeylonCompileTool.java:625)	at com.redhat.ceylon.common.tools.CeylonTool.run(CeylonTool.java:524)	at com.redhat.ceylon.common.tools.CeylonTool.execute(CeylonTool.java:405)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:498)	at com.redhat.ceylon.launcher.Launcher.runInJava7Checked(Launcher.java:115)	at com.redhat.ceylon.launcher.Launcher.run(Launcher.java:41)	at com.redhat.ceylon.launcher.Launcher.run(Launcher.java:34)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:498)	at com.redhat.ceylon.launcher.Bootstrap.runInternal(Bootstrap.java:139)	at com.redhat.ceylon.launcher.Bootstrap.run(Bootstrap.java:93)	at com.redhat.ceylon.launcher.Bootstrap.main(Bootstrap.java:85)