EDIT

Following error occurs sometimes when creating a taxon.

java.lang.Exception: login : admin
editor version : 3.8.0.qualifier
server : test.e-taxonomy.eu / edit-test
schema version : 3.6.0.0.201527040000
os : Linux 3.13.0-62-generic amd64
java : 1.7.0_60
eu.etaxonomy.taxeditor.remoting.CdmEagerLoadingException: java.lang.ArrayIndexOutOfBoundsException: -1
    at org.hibernate.collection.internal.AbstractPersistentCollection.remoteInitialize(AbstractPersistentCollection.java:1334)
    at org.hibernate.collection.internal.AbstractPersistentCollection.initialize(AbstractPersistentCollection.java:603)
    at org.hibernate.collection.internal.AbstractPersistentCollection.read(AbstractPersistentCollection.java:143)
    at org.hibernate.collection.internal.AbstractPersistentCollection.readSize(AbstractPersistentCollection.java:160)
    at org.hibernate.collection.internal.PersistentList.size(PersistentList.java:114)
    at eu.etaxonomy.taxeditor.navigation.navigator.TaxonNodePropertyTester.test(TaxonNodePropertyTester.java:32)
    at org.eclipse.core.internal.expressions.Property.test(Property.java:58)
    at org.eclipse.core.internal.expressions.TestExpression.evaluate(TestExpression.java:99)
    at org.eclipse.core.internal.expressions.CompositeExpression.evaluateAnd(CompositeExpression.java:53)
    at org.eclipse.core.internal.expressions.AndExpression.evaluate(AndExpression.java:29)
    at org.eclipse.core.internal.expressions.CompositeExpression.evaluateOr(CompositeExpression.java:68)
    at org.eclipse.core.internal.expressions.OrExpression.evaluate(OrExpression.java:21)
    at org.eclipse.ui.internal.navigator.NavigatorPlugin$Evaluator.run(NavigatorPlugin.java:245)
    at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
    at org.eclipse.ui.internal.navigator.CustomAndExpression.evaluate(CustomAndExpression.java:71)
    at org.eclipse.ui.internal.navigator.NavigatorPlugin$Evaluator.run(NavigatorPlugin.java:245)
    at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
    at org.eclipse.ui.internal.navigator.NavigatorPlugin.safeEvaluate(NavigatorPlugin.java:260)
    at org.eclipse.ui.internal.navigator.extensions.NavigatorContentDescriptor.isTriggerPoint(NavigatorContentDescriptor.java:426)
    at 
Caused by: java.lang.ArrayIndexOutOfBoundsException: -1
    at java.util.ArrayList.elementData(ArrayList.java:400)
    at java.util.ArrayList.set(ArrayList.java:428)
    at org.hibernate.collection.internal.PersistentList.readFrom(PersistentList.java:409)
    at org.hibernate.loader.Loader.readCollectionElement(Loader.java:1312)
    at org.hibernate.loader.Loader.readCollectionElements(Loader.java:872)
    at org.hibernate.loader.Loader.getRowFromResultSet(Loader.java:723)
    at org.hibernate.loader.Loader.processResultSet(Loader.java:940)
    at org.hibernate.loader.Loader.doQuery(Loader.java:910)
    at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:341)
    at org.hibernate.loader.Loader.doList(Loader.java:2516)
    at org.hibernate.loader.Loader.doList(Loader.java:2502)
    at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2332)
    at org.hibernate.loader.Loader.list(Loader.java:2327)
    at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:490)
    at org.hibernate.hql.internal.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:355)
    at org.hibernate.engine.query.spi.HQLQueryPlan.performList(HQLQueryPlan.java:195)
    at org.hibernate.internal.SessionImpl.list(SessionImpl.java:1247)
    at org.hibernate.internal.QueryImpl.list(QueryImpl.java:101)
    at eu.etaxonomy.cdm.persistence.dao.initializer.AdvancedBeanInitializer.bulkLoadLazies(AdvancedBeanInitializer.java:436)
    at eu.etaxonomy.cdm.persistence.dao.initializer.AdvancedBeanInitializer.initializeNodeNoWildcard(AdvancedBeanInitializer.java:246)
    at eu.etaxonomy.cdm.persistence.dao.initializer.AdvancedBeanInitializer.initializeNode(AdvancedBeanInitializer.java:120)
    at eu.etaxonomy.cdm.persistence.dao.initializer.AdvancedBeanInitializer.initializeNodeRecursive(AdvancedBeanInitializer.java:100)
    at eu.etaxonomy.cdm.persistence.dao.initializer.AdvancedBeanInitializer.initializeNodeRecursive(AdvancedBeanInitializer.java:102)
    at eu.etaxonomy.cdm.persistence.dao.initializer.AdvancedBeanInitializer.initializeAll(AdvancedBeanInitializer.java:80)
    at eu.etaxonomy.cdm.persistence.dao.initializer.AdvancedBeanInitializer.initialize(AdvancedBeanInitializer.java:52)
    at eu.etaxonomy.cdm.persistence.dao.hibernate.common.CdmEntityDaoBase.load(CdmEntityDaoBase.java:519)
    at eu.etaxonomy.cdm.persistence.dao.hibernate.common.CdmGenericDaoImpl.initializeCollection(CdmGenericDaoImpl.java:744)
    at eu.etaxonomy.cdm.api.service.CommonServiceImpl.initializeCollection(CommonServiceImpl.java:322)
    at sun.reflect.GeneratedMethodAccessor1840.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
    at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
    at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
    at com.sun.proxy.$Proxy5599.initializeCollection(Unknown Source)
    at sun.reflect.GeneratedMethodAccessor1840.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)...