Issue:
- Error after setting AOI parameter.
- Error: "Payload data has been discarded. Payload data can be discarded by the camera device if the available bandwidth is insufficient." 


Solution:

- Software crash because it call 2 times of acquisition start.
- After setting the AOI parameters, it call acquisition start function again. This makes camera hang and software crashed.
- In the function "MEGrbSysSetAOI", after setting AOI, it will call below 2 lines:
CCommandPtr ptrAcquisitionStart=pBasler->m_pCameraNodeMap->GetNode("AcquisitionStart");
ptrAcquisitionStart->Execute();
- After removed the 2 lines, no more error during readout.