Unable to open .TVG file

I bought your Harmony 12 before a few days and now I have got problem. I normally save file after my all day work. When I come next day and try to open this file again, I got this error message. It happens with a few layers. I tried copy whole directory with my project to another place at my PC and open, but still the same mistake. Is it the way how I can open it?
Thank you very much

Youhave !! characters in your folder path. Try to avoid naming folders in the path where you are editing Harmony projects using accented characters or special symbols. Only a-z, 0-9, “_” and “-” are entirely safe for naming.