Error --63101 on NiFpga_Open() using LabVIEW FPGA C Interface

Hi all,

This is my very first time using the LabVIEW FPGA C Interface and I am getting the following error:

NON-FATAL RUN-TIME ERROR
Library function error (return value == -63101)

The code that I am trying to use is the following:

NiFpga_Session session;
 
/* must be called before any other calls */
    NiFpga_Status status = NiFpga_Initialize();
    
    if (NiFpga_IsNotError(status))
    {
        /* opens a session, downloads the bitstream, and runs the FPGA */
        NiFpga_MergeStatus(&status, NiFpga_Open("C:\\" NiFpga_Counter_Bitfile,
                                                NiFpga_Counter_Signature,
                                                "RIO0",
                                                0,
                                                &session));
    }

I looked the error up in the "NiFpga.h" and it says that either the bitfile is not valid or may be not compatible with the software I am using. However, I am using LabWindows/CVI 2013 and NI FPGA Interface C API 13.0. Also, I used LabVIEW 2013 to make the bitfile. Any help would be appreciated...

Thanks in advance,

Enrique