It's a cool project, and think it would be really useful for game jams and other projects. I checked the Application Support directory for MasterPlan, but it looks like the logs are barren. I'll see if I can find any information on Rosetta, if it has any logging.
dreamcaster@Dreamcasters-MacBook-Pro MasterPlan % ls -al
total 24
drwx------ 5 dreamcaster staff 160 Nov 27 14:57 .
drwx------+ 31 dreamcaster staff 992 Nov 27 14:56 ..
-rw-r--r-- 1 dreamcaster staff 19 Nov 27 14:56 log_11_27_21_14_56_59.txt
-rw-r--r-- 1 dreamcaster staff 19 Nov 27 14:57 log_11_27_21_14_57_15.txt
-rw-r--r-- 1 dreamcaster staff 19 Nov 27 14:57 log_11_27_21_14_57_17.txt
dreamcaster@Dreamcasters-MacBook-Pro MasterPlan % cat *
Release mode: true
Release mode: true
Release mode: true
dreamcaster@Dreamcasters-MacBook-Pro MasterPlan %