I'm having issues when trying to upload my files, I have the correct DAT file but the software is saying that there is an error and that part of the file can't be found? How can i fix this?

Can you provide some more information please. Which files do you have? What is the exact error message that you see? A screen shot would be helpful here. If you want to zip up your files and share to This email address is being protected from spambots. You need JavaScript enabled to view it. then I can take a look. Note that if you are importing Humminbird sonar log files, which it sounds as if you are, then you need the .DAT file and all of the .SON/.IDX files in the sub-folder that shares the same name as the .DAT file (minus the extension). The actual sonar data is held within the .SON files.