Hi Emily,
Please double check that any transition group that shows up in your Transition Target datasheet should either be appended with the text “[Type]”, or if not, it should be defined as a transition simulation group under “File | Project Properties | Transitions | Advanced | Transition Simulation Groups”. If you only have Transition Groups appended with [Type] in your Transition Targets, you should double check that none of these are defined as belonging to a Transition Simulation Group under “File | Project Properties | Transitions | Transition Types by Group”.
Regards,
Leonardo