ScummVM 1.6.0 Release, ScummVM x64 1.8.0git47-g140b61c.
Not load translations for Belorussian and Russian, Ukrainian and Polish, Cesky and Magyar with builtin theme.
For Belorussian, Russian and Ukrainian
WARNING: Failed to load localized font 'helvb12-iso-8859-5.bdf'. Using non-localized font and default GUI language instead!
For Polish, Cesky and Magyar
WARNING: Failed to load localized font 'helvb12-iso-8859-2.bdf'. Using non-localized font and default GUI language instead!
How reproduce :
1) switch to builting theme
2) select Options-Misc-GUI Language-Belorussian(or another from these)
3) restart ScummVM
Platforms - WinXPx64 SP2, Symbian S60v5
That's expected behavior. You should use the non-builtin classic theme if you want to use a localized GUI.
Closing as invalid.