project_directory/Files/fonts/digit.TTF < changed to .ttf and all good!The folder fonts is inside your Files folder?
The file digit.ttf (all lowercase) is inside the folder Files\fonts\?
What Version of b4a yyou are using?
Which is the targetsdk set to?????
Which Android.jar (Version) you are using?
Interesting that in debug mode this was not an issue?
Edit- I suspect the issue is that Windows ignores case, but Android is more fussy.
Anyway, problem solved- thanks.