Hi,
On TopoDroidX 6.3.63, if the user tries to create a sketch with spaces on its name, TopoDroid substitutes the spaces with underlines which is fine.
But if the user tries to rename a sketch with a new name with spaces, TopoDroid just renames it using the spaces without substitution. I believe TopoDroid should substitute spaces with underlines in sketch renaming too.
As a bonus, TopoDroid could automatically rename sketches created on previous versions that have spaces in their names, substituting the spaces with underlines. That would be nice but might be complicated to implement for very few uses.
Regards,
Rodrigo