Nikon D7500 I can't convert my RAW files...please help.

I just bought the Nikon d7500, my older camera is a d7200. I always shot in RAW and never had any problems converting the d7200s RAW files using Adobe DNG converter. Today I put my camera card of RAW files in from my new d7500 and the converter won't work. A window opens and says "The source folder does not contain any supported RAW files"?! My dng converter is Version 10.0.0.827. Can anyone help guide me to a solution? I'm so frustrated! Thanks so much!