Canon SDK初始化崩溃

im目前正在尝试在C++中使用Canon SDK。这确实是我第一次使用SDK，而且我是C++中的一名工程师

问题是，当我尝试用EdsInitializeSDK()函数初始化SDK时，它会立即崩溃，下面是错误消息：

CameraTest.exe中0x00007FFA34E0121C(EDSDK.dll(处引发异常：0xC0000005:读取位置0x00000000B44D4740时发生访问冲突。

CameraTest.exe中0x00007FFA34E0121C(EDSDK.dll(处出现未处理的异常：0xC0000005:读取位置0x00000000B44D4740时发生访问冲突。

这里有完整的代码：

#include "stdafx.h"
#include "iostream"
#include "EDSDK.h"
#include "EDSDKTypes.h"
#include "CameraModel.h"
#include "CameraModelLegacy.h"
#include "CameraController.h"
#include "CameraEventListener.h"
using namespace std;
int main(void)
{
EdsError err = EDS_ERR_OK;
EdsCameraListRef cameraList = NULL;
EdsUInt32 count = 0;
EdsCameraRef camera = nullptr;
bool isSDKLoaded = false;
err = EdsInitializeSDK();
system("pause");
if (err == EDS_ERR_OK) {
cout << "SDK INITIALISED" << endl;
} else {
cout << "SDK INITIALISATION FAILED WAIT FOR EXIT" << endl;
system("pause");
exit(84);
}
cout << err << endl;
err = EdsGetCameraList(&cameraList);
cout << err << endl;
if (err == EDS_ERR_OK) {
cout << "Camera List Ok" << endl;
err = EdsGetChildCount(cameraList, &count);
cout << "Count : " << count << endl;
if (count == 0) {
err = EDS_ERR_DEVICE_NOT_FOUND;
}
}
else {
cout << "No Camera List" << endl;
}
if (err == EDS_ERR_OK) {
cout << "It worked" << endl;
err = EdsGetChildAtIndex(cameraList, 0, &camera);
} else {
cout << "It didnt worked" << endl;
}
system("pause");
}

如果我删除EDSInitializeSDK函数，它不会崩溃。你知道问题出在哪里吗？谢谢