if tracks / buses still are routed to the master bus you probably just have hidden the master bus. try and select
strips->track manager in console view and see if the box by the master bus is ticked. if it's not; tick it :)
if you've deleted the master fader by accident, just right click sowhere in the bus area and insert a new stereo bus. then right click on that bus and choose
set as default bus to create a new master/default bus (also rename it to master if you want to)
you now have to re-route the tracks and buses to the master though. the fastest way to do this is to select the tracks you want to route and change output while holding down ctrl. this will change the output for all selected tracks
the pan problem is strange though.. what's your setup? audio interface and so on..
does the signal pan visually on the hardware output meters?
edit:______
sorry.. missed that you've got info about your setup in your signature..
still. it's strange. try and get back the master fader and write again if the pan-problem remains