Peter Savli commented,
Ugh, easy solution: In lyrics,I choose font Times New Roman (At first Finale lyrice was pre-set wich doesn't include čšž)
Peter Savli created a post,
Where to find slavic characters (č š ž) in Windows Finale Vista 26.01.655? the alt codes don't work (Alt 0158 for ''ž'' and 0154 for ''š'', there is none for ''č'' anyway). In lyrics options, there...