Error: The language resource file could not be located

Dear all,

This is a follow-up to the question asked here: https://community.sdl.com/developers-more/developers/language-developers/f/61/t/14441 

I wonder if there is an alternative to putting my app in the Trados installation folder?

What's meant by the "language resource file" exactly? Can I remedy the error by copying any files over to my app's folder?

 

Thanks a lot for your help!