Giving that a try now. Before I do, proof that I really do have proper files in that folder:
empeg:/empeg/bin# ls -l /drive0/var/gpsapp/routes
total 16
-rwxr--r-- 1 0 0 3106 Jan 25 19:36 Home_to_Virginia_Way_Hou
se
-rw-r--r-- 1 0 0 2792 Jan 26 04:18 Home_to_Work
-rwxr--r-- 1 0 0 3268 Jan 25 19:36 Virginia_Way_House_to_Ho
me
-rwxr--r-- 1 0 0 1412 Jan 25 19:36 Work_to_Emagic
-rwxr--r-- 1 0 0 826 Jan 25 19:36 Work_to_KFC
-rwxr--r-- 1 0 0 1055 Jan 25 19:36 Work_to_Uptown_Burrito
empeg:/empeg/bin#