Hello. I have WinCE navigation with "Toyota iGO Nextgen 9.19.1.665137 Aug 4 2016 WinCE" installed. I read in one of the previous posts that the voice TTS is the same for Android and IGO NextGen. I tried to install the voices posted above but failed. I put the voices in the "content/voice" folder. They are shown in IGO NextGen, but when I try to select them, there is no sound and it is not a possible way to apply them. This is not the case with English voices.
Where did I go wrong?
Do I need some additional TTS engine for WinCE for the Serbian Language?

Thanks in advance.