Totally opposite experience here - the old projects open just fine, while new projects are getting their mixer messed up! 
Workaround: use Mixer2. I even changed the F3 key command since Mixer1 is totally unreliable.
Totally opposite experience here - the old projects open just fine, while new projects are getting their mixer messed up!
Workaround: use Mixer2. I even changed the F3 key command since Mixer1 is totally unreliable.