Atmos AI download problems

I am hoping you can help me again. I am trying to download the dives from my Aeris AI. I have no problems until the download process is 100% complete, and I get a box that reads “Run-time error ‘76’ path not found”. I have noticed that a new file shows up in my dive folder and it is an “.ldb” file instead of the “.dlg” files I have previously used. The only thing that has changed for me is that I had the battery replaced in the computer last week. Also, after I attempted to download the dives, they have since become non-selectable (i.e they went from black on the dive list to gray). How can I retrieve these dives from the computer, once the run-time error is corrected?

Thank you for your help,

Bob