The statement work fine on version 3.2.5,
since upgrade to 3.2.7 it throw exception,
and I try the latest 4.1.6 got the same problem.

----------------------------------------------------------
Exception in thread "main" java.lang.NullPointerException
at org.hibernate.dialect.function.CastFunction.render(CastFunction.java:36)
at org.hibernate.hql.ast.SqlGenerator.endFunctionTemplate(SqlGenerator.java:197)
at org.hibernate.hql.antlr.SqlGeneratorBase.methodCall(SqlGeneratorBase.java:2223)
at org.hibernate.hql.antlr.SqlGeneratorBase.selectExpr(SqlGeneratorBase.java:1897)
at org.hibernate.hql.antlr.SqlGeneratorBase.selectColumn(SqlGeneratorBase.java:1743)
at org.hibernate.hql.antlr.SqlGeneratorBase.selectClause(SqlGeneratorBase.java:527)
at org.hibernate.hql.antlr.SqlGeneratorBase.selectStatement(SqlGeneratorBase.java:175)
at org.hibernate.hql.antlr.SqlGeneratorBase.insertStatement(SqlGeneratorBase.java:444)
at org.hibernate.hql.antlr.SqlGeneratorBase.statement(SqlGeneratorBase.java:137)
at org.hibernate.hql.ast.exec.BasicExecutor.<init>(BasicExecutor.java:42)
at org.hibernate.hql.ast.QueryTranslatorImpl.buildAppropriateStatementExecutor(QueryTranslatorImpl.java:535)
at org.hibernate.hql.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:178)
at org.hibernate.hql.ast.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:113)
at org.hibernate.engine.query.HQLQueryPlan.<init>(HQLQueryPlan.java:77)
at org.hibernate.engine.query.HQLQueryPlan.<init>(HQLQueryPlan.java:56)
at org.hibernate.engine.query.QueryPlanCache.getHQLQueryPlan(QueryPlanCache.java:72)
at org.hibernate.impl.AbstractSessionImpl.getHQLQueryPlan(AbstractSessionImpl.java:133)
at org.hibernate.impl.AbstractSessionImpl.createQuery(AbstractSessionImpl.java:112)
at org.hibernate.impl.SessionImpl.createQuery(SessionImpl.java:1624)
at com.gss.lager.HibernateTest.main(HibernateTest.java:42)
-------------------------------------------------------------------

sample code :
StringBuffer incoming = new StringBuffer();
incoming.append("insert into DagEdgeImpl(entryEdgeId) ")
.append("select edge.id ")
.append("from DagEdgeImpl edge ")
.append("where edge.endVertex.higherBits = ? ")
.append("and edge.endVertex.lowerBits = ? ");

log.debug("incoming sql : " + incoming);
Query query = session.createQuery(incoming.toString());
query.setLong(0, -552857267868777299L);
query.setLong(1, -5131265078905782943L);
query.executeUpdate();

hbm :
<hibernate-mapping package="com.gss.lager.texture.domain.impl">
<class name="DagEdgeImpl" table="LAGER_DAG_TC_EDGE">

<id name="id" column="id" type="long">
<generator class="native">
<param name="sequence">SEQ_DAG_TC_EDGE</param>
</generator>
</id>

<version name="version" column="version" type="long"/>

<property name="entryEdgeId" column="entry_edge_id" type="long" index="LAGER_DAG_ENTRY_EDGE_IDX"/>

<property name="directEdgeId" column="direct_edge_id" type="long" index="LAGER_DAG_DIRECT_EDGE_IDX"/>

<property name="exitEdgeId" column="exit_edge_id" type="long" index="LAGER_DAG_EXIT_EDGE_IDX"/>

<property name="hops" column="hops" type="long" not-null="true" index="LAGER_DAG_HOPS"/>

<property name="dagId" column="dag_id" type="string" not-null="true" index="LAGER_DAG_ID_IDX"/>

<component name="startVertex" class="com.gss.lager.texture.domain.UUID">
<property name="higherBits" column="start_vertex_hi" index="LAGER_DAG_START_VTX_HI"/>
<property name="lowerBits" column="start_vertex_lo" index="LAGER_DAG_START_VTX_LO"/>
</component>

<component name="endVertex" class="com.gss.lager.texture.domain.UUID">
<property name="higherBits" column="end_vertex_hi" index="LAGER_DAG_END_VTX_HI"/>
<property name="lowerBits" column="end_vertex_lo" index="LAGER_DAG_END_VTX_LO"/>
</component>

</class>
</hibernate-mapping>