Associated Voila files to finder by mistake
You could reset/unregister Finder file associations with the following procedure:


In the Finder, press
&#x2318;+&#x21E7;+U to open the
Utilities folder.
Open Terminal.app () in the Utilities folder.
To unregister the associations, paste this into the Terminal window, followed by &#x21B5; : /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/LaunchServices.framework/Versions/A/Support/lsregister -u /System/Library/CoreServices/Finder.app -domain user
To restart the Finder, type: killall Finder, followed by &#x21B5;
Voila documents should be Voila documents again.


Let me know if this works!