[SOLVED] PCAN QList Error when using a USB hub

[Tecnova]

Hello,
I'm using PCAN to generate and send CAN Messages. Everything worked till now, I could create and send Messages. And I could see all my send CAN Messages on the PCAN-View Tool.
My problem now is that I pluged in a USB hub where I have two serial devices pluged in.
Now I get: ASSERT failure in QList<T>::at: "index out of range" when I call a PCAN libary function.

QPair<bool, BYTE> Simulation::checkUSBChannel()
{
    int iBuffer;
    TPCANStatus state;

    for(BYTE i = 0; i < 8; i++)
    {
        state = CANDriver->GetValue(handleArr[i],  //when I call this function I get the error
                                    PCAN_CHANNEL_CONDITION,
                                    (void*)&iBuffer, sizeof(iBuffer));
        if((state == PCAN_ERROR_OK) && (iBuffer == PCAN_CHANNEL_AVAILABLE))
            return QPair<bool, BYTE>(true, handleArr[i]);
    }
    return QPair<bool, int>(false, 0);
}

TPCANStatus PCANBasicClass::GetValue(
        BYTE Channel,
        BYTE Parameter,
        void *Buffer,
        DWORD BufferLength)
{
    if(!functionLoaded) //the function gets loaded from the dll file
        return PCAN_ERROR_UNKNOWN;
    //and when i call this the QList error occures
    return (TPCANStatus)m_pGetValue(Channel, Parameter, Buffer, BufferLength); 
}

I also get this error when I call the PCAN initialize function.
When I only plug in the PCAN USBstick into the hub it works too, but as soon as I plug in one of my serial devices anywhere on my PC I get that error again. The PCAN Applications are working no mather what I plug in and where.

I have absolutly no clue what is wrong.
If some one has any idea what could be wrong, please answer.
Thanks to everyone

[Tecnova]

I think I solved it. I pluged the electricity source into the USB hub and now it is working (still don't really know why). I will do some more testing, if it still works I will change the topic to [soved].