BuildContainsExpression clause for Linq to Entities

Question

Is there any reason why the below query fails as soon as I try to evaluate the IEnumerable if lstIDs that I pass in contains 15 ID's. It works with less than 15. I know the query is not optimized as I'm not querying using the PartitionKey or RowKey but I can't see why it fails. I can see that the query has been built and looks to be correct but I get this error message...

<?xml version="1.0" encoding="utf-8" standalone="yes"?>

<error xmlns="http://schemas.microsoft.com/ado/2007/08/dataservices/metadata">

  <code>InvalidInput</code>

  <message xml:lang="en-US">One of the request inputs is not valid.

RequestId:2a0aa9e7-7b0b-45b7-878f-0d81a707aee8

Time:2011-07-18T12:01:15.3502808Z</message>

</error>

 

 

 

        public IEnumerable<TBLObject> GetObjects(List<string> lstIDs)

        {

            var query = (from p in this.context.Objects

                            select p)

                            .Where(BuildContainsExpression<TBLObject, string>(tt => tt.ID, lstIDs));

 

            CloudTableQuery<TBLObject> cloudTableQuery = query.AsTableServiceQuery<TBLObject>();

            return cloudTableQuery.Execute();

        }