This article will describe a possible procedure to restore damaged ARD files.
Not all damaged files can be recovered, keep in mind to have a proper backup procedure.
All the text inside quotes or double quotes should be typed without quotes.
Copy the damaged file to a path easy to find.
Consider renaming the file to something easy without spaces or strange characters.
Launch ArtiosCAD and create a new design file.
After following the steps above, consider moving all the structural lines to Main Design layer and the other lines to the appropriate layers.
ArtiosCAD all versions
27 Jun 2019