"No language is installed in your default TTS Engine"? What should I do? I have just installed a pdf reader in my Samsung Galaxy Y mobile phone which comes with android 2.3 Gingerbread. This pdf reader has a text to speech option, but I am not able to use it and getting the error message: "No Language installed in your Default TTS Engine".

What should I do? How do I fix this?
You need to install the speech synthesis data for the TTS engine.  You can find it on the play store here.

Edit : The installer seems to have been removed from the Play Store for some reason.  It can be found here.