navionics pc app question

Think I posted this in the wrong place so I'll try again.

Guys,
I have a Df question not exactly in this subject by maybe you can help. I have the Navionics PC app on my PC and I have been able to transfer data back and forth from the PC to my HB using and SD memory card. Today I added a couple of spots on my home lake on the PC and normaily I just plug in my SD card and use the file download menu on the app to add data to the SD card. Then I plug the SD card in the HB and it downloads to the DF when I turn it on.
Today when I try to download the data to the SD chip from my PC it says nofiles match your search. I am clicking on the "save to card" button, then selecting the Humminbird format, then select the SD card and click save and I get the above message.
Anyone using this and can shed any light on what I am doing wrong?? Never had a problem before today.
Thanks
SeaRay