Don't get...playing project with sound...ok. But nothing to see moving in the mastermixer (no bouncing levels). Rendering project also ok...
Are you referring to the Master Mixer or the Mixer 'Console' ? Either way, check what kind of metering is selected. If the meter resolutions is set to the minimum12:1, it will not illuminate if levels are below -12dBFS (assuming the 'full scale' mode is selected) The 'Console' mixer has selection tabs for channels, subs, masters, ect. Engage the desired source.
Seems to be solved on it's own for some odd reason now....thanx anyway rraud.