Make error condition easier to understand
Make error condition easier to understand

johannrudi/libsc,johannrudi/libsc,holke/libsc,johannrudi/libsc,cburstedde/libsc,johannrudi/libsc,cburstedde/libsc,holke/libsc,cburstedde/libsc,cburstedde/libsc,holke/libsc,cburstedde/libsc,holke/libsc,johannrudi/libsc