Query.whereIn on Oracle report ORA-32109: invalid column or parameter position

[mspellecacy]

Trace returns the generated query as:

select t0.processor_code AS c0, t0.processor_type_code AS c1, t0.processor AS c2, t0.year AS c3, t0.address AS c4, t0.city AS c5, t0.state AS c6, t0.zip_code AS c7, t0.contact_name AS c8, t0.phone_1 AS c9, t0.phone_2 AS c10, t0.comments AS c11 FROM data.processor t0
WHERE t0.processor_code IN (:1,?,?,?,?,?,?,?,?)  
[ 'C2971', 'C5341', 'C6687', 'C67309', 'C8500', 'F0133', 'F4449', 'F8162', 'TP9580' ]

Oracle Returns the error:

[Error: ORA-32109: invalid column or parameter position]

If I take the generated query and make:

select t0.processor_code AS c0, t0.processor_type_code AS c1, t0.processor AS c2, t0.year AS c3, t0.address AS c4, t0.city AS c5, t0.state AS c6, t0.zip_code AS c7, t0.contact_name AS c8, t0.phone_1 AS c9, t0.phone_2 AS c10, t0.comments AS c11 FROM data.processor t0 WHERE t0.processor_code IN ('C2971',
  'C5341', 'C6687', 'C67309', 'C8500', 'F0133', 'F4449', 'F8162', 'TP9580' );

Everything returns fine.

Here is the code making the call:

exports.processors = function (req, res, next) {
  persist.connect(function (err, conn) {
    if(err) { console.log(err); } else { console.log("DB Connected"); }
    ProcessorAreaContext.where({managementCode:req.params.unitCode}).all(conn, function (err, pacs){
      if(err) { console.log(err); }
      Processor.whereIn('processorCode', _.pluck(pacs,'processorCode')).all(conn, function (err, procs) {
        if(err) { console.log(err); }
        res.end();
        //res.json(procs);
      });
    });
  });  
};

I can probably hack out a workaround, but it seems like this code should work according to the docs?