Same here... Note 2 4.4.2, pushed app to Data/app, cleared dalvik and cache, restarted...
All went smooth, Streetpilot started with no logo, then black window... and nothing.
Pulldown shows blue triangle and Streetpilot app running but no other reaction... path is extSdCard... used Lollypop's libgarminos from post25... changed all permissions OK.... no idea why is this happening. Cheers.