Problem in creating DLL for a LabVIEW VI

Question

Hi
I am facing problems in creating DLL for a LabVIEW VI. Previously i had no problems in creating DLL for the VI that transmits a message from serial port to NI - PXI 7831-R Reconfigurable I/O card (configured by FPGA MOdule). When i try the same VI with a customized port developed using IVI drivers i am not able to create the DLL. It gives me error as follows:
Fatal Internal error: "datamgr.cpp", Line No: 1882
Please somebody help me out to fix this error.
Regards,
Subramania Bharathi

Answer 1

Hi,
Thanks for your curiosity in replying my questions. I am really sorry for replying so late. Actually the problem was with the NI SWITCH 2503 functions. Actually i was multiplexing the channels of my customized serial port using NI Switch module. This switching is done before i start my communication. My VI follows a sequence as follows.
1. Connect two channelss using Switch functions
2. configuration of both FPGA and the customized port
3. Transmit data from the port
4. Receive it in FPGA.
5. Reset the channels using Switch functions
I never expected that the error was because of NI Switch. When i removed them from my VI i was able to create the DLL and able to create sequence successfully to run in the Testsand. And
further i am using Switch Executive for swithcing the channels in TestStand.
But now i am very curious why it posted me that error when i used my NI Switch function?? I tried to create DLL for a VI that switches two channels and i was successful. But the error occurs only when i combine i with my FPGA functions!! If you could trace out the reason, please let me know
Once again thanks a lot for your support
Regards,
Subramania Bharathi