Sql-server – Multiple SQL Server instances with FileStream enabled

Is it possible to have two SQL Server instances, one 2008 R2 and another 2012, to run on the same machine with both having filestream enabled?

I tried to setup this in local dev machine and I can get the services running. But when I try to read a filestream from the 2008 R2 instance, I get a ArgumentException.

The path in both instance looks alright.

SQL Server 2008 R2

\\DEVMC\MSSQLSERVER\v1\TESTDB\dbo\coreFileStore\fileData\525F2031-8D8C-45FF-8386-E1DD5F11C960

SQL Server 2012

\\DEVMC\EXPRESS2012\v1\TESTDB12\dbo\coreFileStore\fileData\525F2031-8D8C-45FF-8386-E1DD5F11C960

Is there any magical setting which could make it work in both instances or is just simply not do-able?

Here is the exception stacktrace when trying to access the file using C# test code.

System.ArgumentException : An invalid parameter was passed to the function.
   at System.Data.SqlTypes.SqlFileStream.OpenSqlFileStream(String path, Byte[] transactionContext, FileAccess access, FileOptions options, Int64 allocationSize)
   at System.Data.SqlTypes.SqlFileStream..ctor(String path, Byte[] transactionContext, FileAccess access, FileOptions options, Int64 allocationSize)
   at System.Data.SqlTypes.SqlFileStream..ctor(String path, Byte[] transactionContext, FileAccess access)
   at SimpleTests.FileStreamTest.ReadFilestream(String connectionstring, String fileid) in FileStreamTest.cs: line 47

And here is the NUnit test method I used to verify the issue. FileStore access to TESTDB fails, but TESTDB12 works fine.

[TestCase(new object[] { "Data Source=localhost;Database=TESTDB;Integrated Security=True;Connect Timeout=120;", "525F2031-8D8C-45FF-8386-E1DD5F11C960" })]
[TestCase(new object[] { "Data Source=localhost\\express2012;Database=TESTDB12;Integrated Security=True;Connect Timeout=120;", "9AC28DC0-B927-4075-8D31-00E343E15663" })]
public void ReadFilestream(string connectionstring, string fileid)
{
    const string _selectSql =
        @"SELECT fileData.PathName(), GET_FILESTREAM_TRANSACTION_CONTEXT()
  FROM coreFileStore
  WHERE fileStoreId = @FileStoreId";

    using (SqlConnection connection = new SqlConnection(connectionstring))
    {
        connection.Open();
        using (SqlTransaction transaction = connection.BeginTransaction())
        {
            string filepath;
            byte[] txnInfo;
            using (SqlCommand command = connection.CreateCommand())
            {
                command.CommandText = _selectSql;
                command.Parameters.AddWithValue("FileStoreId", new Guid(fileid));
                command.Transaction = transaction;
                using (SqlDataReader reader = command.ExecuteReader())
                {
                    reader.Read();
                    filepath = reader.GetString(0);
                    txnInfo = reader.GetValue(1) as byte[];
                }
            }

            Console.WriteLine(filepath);

            using (SqlFileStream sqlFileStream = new SqlFileStream(filepath, txnInfo, FileAccess.Read))
            {
                using (StreamReader reader = new StreamReader(sqlFileStream))
                {
                    string x = reader.ReadToEnd();
                    Console.WriteLine(x);
                }
            }
        }
    }
}