PaulS:
The .pde extension on the file being compiled is a clue that the library is old. It has probably not been updated to work with version 1.0+ of the IDE.A link to the library would be useful.
Ok this is the link of the library
http://www.tehnorama.ro/wp-content/uploads/2010/06/TTS.zip
That i am trying to do is make arduino speak without shield.
http://forum.arduino.cc/index.php?topic=49654.0
thank you for the answer .