The neutral switch is in the levers. So... unless you had them out, to get to the other end of the cable... it shoudl be OK. BUT... I would still check the switch. It could be a coincidence that it had an issue too.
With that said... if you get one beep.... did you try to move the shift lever?
But, as Joe said... one beep means it's not reading the lanyard. (try cleaning the contacts)