I have a 997 that I recorded a few different images/recordings onto a 16G Lexar SDHC card before putting the boat away for the winter. When I put the card into my laptop, the card is found/identified by HumminbirdPC but it doesn't recognize any files to bring into the software. When I bring up the Card in MS Explorer I see various files on it including .idx, .son, .dat files - multiple for the different recordings. It looks like HumminbirdPC is looking for gpx files - Did I not record the items correctly on the 997 or am I doing something incorrect on HumminbirdPC?