ARD keeps crashing when I am saving Subflow decisions. 

I right click the Subflow for Millennial Madness Starter and select Edit, select Application Links ? Browse > Source> File > Select Flow Version > Select Stored Path Type

Then it crashes.  

Release : 3.0

Component : CA Agile Requirements Designer

I've reproduced this on 3.0 but it does not crash on 3.1. Therefore I recommend an upgrade.  Please download the GA ARD 3.1 version and install.