Hello and thank you for your question. I look forward to assisting you today. Have you checked the memory cards to make sure they are inserted correctly?
Are you trying to transfer multiple photos to the frame?
You have limited internal storage capacity, so if you are trying to transfer more photos than it can handle, you may get that message. Try copying one photo to see if you get the same message. If you do, Unplug the power cable from the frame. Wait 5 seconds, then reconnect the cable. Press and hold the power button (for about 2 seconds), then release. That may clear the error.
Have you used the frame without problems before?
Does your computer detect it when you connect it?
What version of Windows are you using?