How to remove incompatible software flagged during 10.10.3 upgrade?
Qmaster is the Apple Qmaster.


  Apple Qmaster is a system made by Apple Inc. that provides automated
  work distribution and processing for high-volume projects....


It is a 32 bit version and the 10.10 does not like it.

I use AppCleaner app to remove apps from my system since it will also find all associated parts of that app.