IMAQ I/O & IMAQDX

Hello,

I'm using NI PCIe-8255R. I linked lamps (ISO outputs 1,2,3) and a IEEE 1394 (firewire) camera to it.

I'm programming in C and using IMAQ-IO API (to switch on lamps), and IMAQDX API (for the camera).

I can use imaqio functions (to switch on lamps) and imaqdx functions (like grab function) separately but I can't do it in the same main program.

For example I can't use : imaqIOOpen() after/before IMAQdxOpenCamera()

Environment :

Windows 7

I installed Labview 2010, NI-IMAQ I/O 2.6.1, IMAQDX 4.1

The error box is this :

In English : "Exception not managed at 0x77979a4c in camera.exe : 0xC0000005 : access violation when reading at 0x000003e6"

Thank you for any help