Class cast exception using web service with bind varables

I am using a restful web service, which works fine if literal values are used to constrain it. However, when I use bind variables, it gives me a traceback:

java.lang.ClassCastException: org.teiid.query.sql.lang.ImmutableCompareCriteria cannot be cast to org.teiid.query.sql.lang.AbstractSetCriteria
at org.teiid.query.processor.relational.DependentCriteriaProcessor.prepareCriteria(DependentCriteriaProcessor.java:352)
at org.teiid.query.processor.relational.DependentProcedureCriteriaProcessor.prepareNextCommand(DependentProcedureCriteriaProcessor.java:60)
at org.teiid.query.processor.relational.DependentProcedureExecutionNode.prepareNextCommand(DependentProcedureExecutionNode.java:88)
at org.teiid.query.processor.relational.PlanExecutionNode.open(PlanExecutionNode.java:79)
at org.teiid.query.processor.relational.DependentProcedureExecutionNode.open(DependentProcedureExecutionNode.java:108)
at org.teiid.query.processor.relational.RelationalNode.open(RelationalNode.java:250)
at org.teiid.query.processor.relational.RelationalNode.open(RelationalNode.java:250)
at org.teiid.query.processor.relational.JoinStrategy.openRight(JoinStrategy.java:101)
at org.teiid.query.processor.relational.JoinNode.nextBatchDirectInternal(JoinNode.java:256)
at org.teiid.query.processor.relational.JoinNode.nextBatchDirect(JoinNode.java:200)
at org.teiid.query.processor.relational.RelationalNode.nextBatch(RelationalNode.java:277)
at org.teiid.query.processor.relational.ProjectNode.nextBatchDirect(ProjectNode.java:146)
at org.teiid.query.processor.relational.RelationalNode.nextBatch(RelationalNode.java:277)
at org.teiid.query.processor.relational.RelationalPlan.nextBatch(RelationalPlan.java:141)
at org.teiid.query.processor.QueryProcessor.nextBatchDirect(QueryProcessor.java:148)
at org.teiid.query.processor.QueryProcessor.nextBatch(QueryProcessor.java:111)
at org.teiid.query.processor.BatchCollector.collectTuples(BatchCollector.java:160)
at org.teiid.query.processor.BatchCollector.collectTuples(BatchCollector.java:142)
at org.teiid.dqp.internal.process.RequestWorkItem.processMore(RequestWorkItem.java:492)
at org.teiid.dqp.internal.process.RequestWorkItem.process(RequestWorkItem.java:362)
... 8 more

The SQL is:
<not shown for internal security reasons – used a dependent join to a web service using an 'in' operator>,