Each time I press a particular button in my circuit the red RX light flashes briefly.
I have been having trouble with making this button perform the command it should, I and am wondering if the RX flash has something to do with that, or is at least reporting some sort of error?
The TX LED is there to show that some data or signal has been received on your Arduino. When you press the button on your circuit, it briefly sends a signal which then triggers the RX LED on your Arduino. Most often, the RX LED is used to troubleshoot whether you are receiving an input and, in your case, it seems you are.
Therefore, the RX LED is not an error and shouldn't be the source of your problem.
