Wireless FD won't read Mac Text Edit .rtf or .rtfd files

The files that I saved from Text Edit on my Mac to the SD wireles USB can no longer

be read on my ipad using the wireless app.  My app is up to date, and the only thing that I have 

changed is updating my ipad to IOS 8, since I last was able to read these .rtf or .rtfd files.

I put the USB into a windows laptop, and the files could be read there.  The files can also be

read when the USB is put in my Mac.

   Is there an update to the Mac app coming?  

I really liked this wireless USB, and it worked perfectly before.