where should i place my libraries than? I always thought you put them there, so far it has not caused me anyproblems
What will happen when version 1.0.2 is released. Absolutely none of your code will work, until you download all the libraries again. Will you remember where you got them?
In the folder where you store your sketches, there should be a folder called libraries. If not, create one. Then, move all the libraries you have downloaded there.
That way, they will still be available after you install 1.0.2.
LcdString(c);
The LcdString function takes a string (a NULL terminated array of chars, not a single char. Either create a 2 element array, and put c in the first element and NULL in the second, or call LcdCharacter() instead.