I installed trackmania nations forever and when I went to play the car would not accelerate with the pedal. I went to inputs and saw that the section: accelerate (analog), had so I clicked that and pushed down my accelerate pedal, I noticed there was no brake (analog). Now, when I play, it will accelerate properly, but if I let go of the pedal it will brake and go backwards without anything being pressed. Any suggestions? The logitech drivers etc. have been properly installed.
That means you have the same pedal set to accelerate and brake, so pressing on it accelerates the car and releasing it brakes the car. You'll have to manually assign the other pedal to brake.
If you have a control panel GUI for the wheel/pedal set can you take a screenshot of it and put it in your post?
UPDATE: Fixed it :) omen's description led me to explore the wheel profile and under a section known as specific game settings there was an option to "report wheel and pedal on the same axis". That seemed to do the trick! Thanks for the support.