Lilypond not working anymore

[Mickey]

I had written a program that transforms guitar tablature to Lilypond input 
codes for saxophone notes. I was using Lilypond successfully to produce 
acrobat and windows media files of saxophone music. I recently tried to use 
Lilypond and it has stopped working for my program and also it won't recognize 
any correct input. I drag and drop notepads like I used to and nothing 
happens. I have uninstalled and reinstalled every version at least twice and 
the same thing happens each time. It won't even open the test that comes with 
it. I spent months creating that program and it will only work with Lilypond 
and I really need it badly for a project I am involved in. Please pleaseplease 
help me understand what I am doing wrong so that I can get back to using 
Lilypond.