Ecco ProX filenames end in "dot eco" but don't have the right icon

 I've been without Ecco ProX for many months because it wouldn't launch. The other day, I tried again and it worked and recognized only 2 of my numerous Ecco files. 
  
 Yesterday, I tried to introduce some additional Ecco files that I have on a flash drive. This computer is Windows 10.
  
 When I viewed the folder on the flash drive, however, it did not have the yellow and green Ecco icon at the beginning of each Ecco filename. The extension for each was .eco (dot eco) but it didn't matter. Double-clicking the file wouldn't open the file.
  
 I then viewed the same flash drive folder on a Windows XP computer which no longer has Ecco installed (it used to be on that computer until it wouldn't work anymore), and the Ecco icon appeared properly.  
  
 I've never observed this condition before.  
  
 I contacted Pastor Don directly and his response was:
  
 I think this is a Windows question, not an Ecco question. I'm not quite sure of the answer, it might lie in File Associations, which is a bit of a mystery to me in Windows 10. Sometimes doesn't seem sticky.
  
 Can anyone help me to solve this perplexing problem?
  
 Thanks, Bill