WindowsPortableDevice IPortableDeviceContent::Delete Causes My Device to hang. How can I solve this?

I have been trying to build a file explorer of my Android phone content that would be optimized to my needs. As FindFirstFile api could not work for MTP devices I had to learn Windows Portable Device Api.

I met alot of obstacles but got most things working:

• enum devices and files
• get file properties
• rename file
• create folder
• copyDeviceFileToPc
• copyPcFileToDevice

My only road block now is deleting files. I followed the MSDN sample perfectly but still met into problems. The problem is when I try to delete a file, the file gets deleted but the device hangs and becomes unresponsive. Not even Windows explorer is able to access it at that point. I have to disconnect and reconnect the device. However windows explorer is able to delete files on the device no problem.

This is my code

typedef const wchar_t *string_t;

bool wpd::Device::deleteFile(string_t file_id)
{
    PROPVARIANT file ={};
    IPortableDevicePropVariantCollection *filesToDelete = newIPortableDevicePropVariantCollection(); // Calls CoCreateInstance
    IPortableDeviceContent *devContentMgr;

    file.vt = VT_LPWSTR;
    file.pwszVal = (LPWSTR)file_id;
    filesToDelete->Add(&file);

    // IPortableDevice *dev initialized in constructor
    dev->Content(&devContentMgr);

    HRESULT hr = devContentMgr->Delete(PORTABLE_DEVICE_DELETE_NO_RECURSION,filesToDelete,NULL);

    filesToDelete->Release();
    devContentMgr->Release();

    return SUCCEEDED(hr);
}

Note that I am doing this on Windows Xp.